Anecdotally, I've been extremely unimpressed with Google's Fi / Nexus / Pixel support.
I had a Nexus phone on Fi that -- while I was holding it in my hand texting -- it went black and never turned on again, for no reason. I assumed the battery died -- even though the UI displayed that I had most of my battery still. No, it completely bricked. Coincidentally and non-conspiratorially, it might've been ~2 weeks after my 1-year warranty expired. But after the whole iPhone planned obsolescence thing, I was skeptical.
Still, I called into Fi support. Not only were they completely unapologetic for the phone bricking, but they also had literally only one phone available for sale -- the new $700+ Pixel XL. I didn't want that phone. They offered no discount. Their answer was "you can wait a month until we get new phones". I had to buy a phone (grudgingly) from Verizon.
Overall, one of the worst experiences I've had with a Telecom company -- and it's not like I've had any experiences I would describe as "jolly".