The fastest way to reach Comcast is by phone, but the number depends on what you need

Comcast's main customer service line is 1-800-934-6489. This number handles billing questions, service issues, account changes, and most other problems. Wait times vary by time of day — calling early morning or late evening usually means shorter holds than midday.

If you have a Comcast Xfinity Mobile account, use 1-833-549-0935 instead. For Comcast Business services (if your account is registered as a business rather than residential), call 1-800-391-3000. Having your account number ready before you call speeds up the process — you can find it on your bill or in the Xfinity app.

If you are calling about a service outage in your area, Comcast's automated system can often restore service or tell you when power will return without connecting you to a representative. The same main number handles outage reports.

Key Takeaways

  • Call 1-800-934-6489 for residential Comcast issues; have your account number ready to avoid repeating information.
  • Chat and email are available through the Xfinity app and website if you prefer not to call or are contacting outside business hours.
  • Comcast Business and Xfinity Mobile have separate phone numbers and support teams.
  • Social media accounts like @ComcastCares on X (formerly Twitter) can escalate problems that phone support has not resolved.

Using the Xfinity app and website for chat and account access

The Xfinity app (available on iOS and Android) and the website xfinity.com both offer live chat support during business hours. Open the app, tap the profile icon, scroll to "Help & Support," and select "Chat with us." Chat typically connects you faster than phone hold times and creates a written record of the conversation.

The app also lets you manage your account without calling: restart your modem or router, check your bill, update payment methods, and see service outages in your area. If you forget your Xfinity password, use the "Forgot username or password?" link on xfinity.com to reset it by email.

Email support is slower than chat or phone but useful if your issue is not urgent. You can send a message through the chat interface and request a callback, or contact Comcast through their website's contact form. Responses typically arrive within 24 to 48 hours.

Reaching Comcast through social media and escalation

@ComcastCares on X (formerly Twitter) is monitored by Comcast's social media team and often responds within hours. This channel works well if you have already called and the issue was not resolved, or if you want to document a problem publicly. Direct message them with your account number and a description of the issue.

Comcast also monitors Facebook messages through their official Comcast page. Response times are similar to X — usually within a few hours during business days. Social media escalation does not always solve the problem faster, but it creates a record and sometimes routes your case to a supervisor.

Mailing a written complaint or request

If you need to send something in writing — a formal complaint, a request for a rate review, or documentation — Comcast's mailing address is:

Comcast Cable Communications, Inc. One Comcast Center Philadelphia, PA 19103

Include your account number, a clear description of your issue, and any supporting documents (like a bill or screenshot). Mail takes 5 to 10 business days to arrive and another week or two for a response. This method is slower than phone or chat but creates a paper trail if you need to file a complaint with your state's public utilities commission later.

What information to have ready before you contact Comcast

Gather these details before calling or chatting to avoid repeating yourself:

  • Your account number (on your bill or in the Xfinity app)
  • The phone number associated with your account
  • A description of the problem, including when it started
  • Any error messages or codes you have seen
  • The model number of your modem or router (usually on a sticker on the device)

If you are calling about a billing issue, have your most recent bill available. If the problem is a service outage, check xfinity.com/outages first to see if Comcast has already reported it — if so, you will get an estimated restoration time without waiting on hold.

Troubleshooting common issues before contacting support

Many Comcast problems can be fixed without calling. Restart your modem by unplugging it for 30 seconds, then plugging it back in — wait 2 to 3 minutes for it to fully restart. Restart your router the same way if you have a separate one. This fixes most internet slowness and connection drops.

If your TV is not working, check that all cables are plugged in firmly and that your cable box is powered on. If your remote is not responding, replace the batteries. For billing questions, log into your Xfinity account online to see your current balance, due date, and payment history — sometimes a payment is processing and has not shown up yet.

If none of these steps work, then contact Comcast with the details above. Having already tried a restart shows the support team you have done basic troubleshooting, which often speeds up the call.

Frequently Asked Questions

What time does Comcast customer service close?

Phone support is available 24 hours a day, 7 days a week. Chat support hours vary but typically run 8 a.m. to 10 p.m. Eastern time on weekdays and 9 a.m. to 9 p.m. on weekends. Check the Xfinity app or website to see current chat availability in your time zone.

Can I cancel my Comcast service over the phone?

Yes. Call 1-800-934-6489 and tell the representative you want to cancel. They will ask why you are leaving and may offer discounts to keep you. If you have a contract, there may be an early termination fee — ask about this before confirming the cancellation.

How do I report a billing error?

Call 1-800-934-6489 or use chat through the Xfinity app. Describe the charge you believe is wrong and when it appeared on your bill. Comcast will review your account and either correct the charge or explain why it is there. Keep a copy of your bill for reference.

What if I have a Comcast Business account?

Business accounts have a separate support line: 1-800-391-3000. Business support hours and response times differ from residential support. Have your business account number and service address ready when you call.

Can I get a refund for service outages?

Comcast may credit your account for extended outages, but you usually have to request it. Call or chat to report the outage and ask about a credit. Comcast typically credits one day of service for outages lasting 24 hours or longer, though policies vary by location.