We used “enhanced” DSL from Verizon - goes out every time there’s a thunderstorm within twenty miles of the house.....
TWC here in Columbia decides to randomly drop and lose DNS a few times a day for week or so then stabilize.
I tried that years ago. Within a short time, I was back with Earthlink. The guy at the post office said to me, "Oh, another Verizon modem getting mailed back?" He said he saw many people sending their Verizon modem back to Verizon and finding another provider.