I've had recent problems with my account, and I've been calling this number for the past 3 days.
They did manage to solve my problems billing and phone related problems, but it occured to me that I could not find this number on the customer service site.
I just went by what Google told me.
I'm rather concerned now.
@XSpinder wrote: ... I could not find this number on the customer service site ...
"(800) 934-6489" is 1-800-Xfinity and is the main number for Comcast customer service. Sometimes they list it on the "Contact Us" page, sometimes not. It does appear on a number of Comcast pages (see https://www.google.com/search?safe=off&q=(800)+934-6489+site:xfinity.com).
The safest and probably best number to use is the one printed on your Comcast bill. If you don't have one handy you can view a PDF verson online by logging in to https://customer.xfinity.com/#/billing.
Hello, XSpinder, thank you for reaching out here! I understand your concern and get how important it is to make sure you're speaking to a real employee. BruceW is correct, that is the main Comcast phone number, so no need to worry.
You are also more than welcome to reach out to us here on the forums for any assistance. Let us know if there's anything else you need help with!