I've seen numerous people ask this question and find it (surprisingly) un-answered in most forum topics.
I've had Verizon for over a year; I have never had any issues....until I needed customer service. I have talked with Verizon representatives twice over the phone, and both times the representative had no "customer care" person that they were "allowed" to put me in touch with. On the first occasion the representative mentioned that someone would call me by noon the next day. Two weeks later and I'm still waiting for that call. So, I finally call again today. Same thing...she didn't mention that someone would call me the next day, she said she could "report it to the back room."
Prior to having Verizon last year, I had Comcast Xfinity. I only switched to Verizon because we moved to a new housing development and neither Verizon nor Comcast had services and were still implementing lines. After 3 months of not having any Internet services at home, Verizon completed their lines first, therefore, I switched my accounts to Verizon. I don't watch much TV, but, do feel that for the pricing Xfinity offered more channel options. But, MOST IMPORTANTLY, Comcast has a Customer Care unit where if you have ANY issues, they will do their best to resolve, including if you are not unhappy with the technical service, but, unhappy with the customer experience. I have NEVER seen such a large company spend so little time (and apparently money) on customer experience. On my first call, apparently I called 30 minutes before the customer service hours were over and when it became clear I would need to talk with a supervisor, they kept putting me on hold. The representative would keep saying..."we are about to close. Do you want to keep on holding." Of course, I had already been holding for 20-30 minutes since before you answered. Of course, when the supervisor came on the phone, she was rude. I understand being ready to go home -- we all have jobs, but, you probably should have answered the phone 20 minutes ago, instead of hoping that I would decide to call back. Anyhoo, at this point...I've racked a variety of complaints and before I pay my next bill, my early termination fee, and discontinue my service to go back to Comcast, I just watch to write a formal complaint. I get SO tired of spending money ($240+/mo for the past 15 months) with big companies that don't value their customers.