It seems like this is something that's effected multiple providers. For tmobile, I'm on Google FI

I've restarted my phone and tried the airplane mode strat but no dice I'm completely kicked out....

Perhaps it's time to try Verizon

My understanding is that Google Fi is a glorified T-Mobile MVNO at this point (i.e. you're a Fi customer but using T-Mobile towers). It used to give you the closest/best connection of T-Mobile, Sprint, or US Cellular, but Sprint no longer exists, and T-Mobile bought US Cellular.