tl;dr:
* all payments through google use google pay
* poster's husband bought a pixel 3 at the same time there was fraud on their card.
* the pixel 3 shipped even though the payment was reversed because of the fraud
* google shut down his google pay account hard, and that broke google fi, hangouts, access to his phone number, etc.
* google support has been super googley about this (ie foad)
* if you ever have fraud problems with google pay, prepare for all google stuff to break with 0 resolution or help
* as a side note, poster bought a pixel 3 and they have improved their support from the pixel 2 to be more googley. The phone remains basically broken.