Mint is saying my phone is no longer compatible and I will not get a refund for my 1 year subscription. Looking to switch networks

Hello,

I have been using mint for a while and it was working until a few months ago when I started having issue with data. It to the point that I was unable to use my data for several months. I spent a whole month talking with custormer service during which we did all sorts of trouble shooting and I even tried a new sim. None of this worked and in the end they said that it is because my phone is partially compatible.

My issue is that my phone was working perfectly fine for over a year and suddenly this issue pops up. To this they said that compatibilty might change based on tower updates. Their website still says that my phone is fully compatible and when I was initially touble shooting with mintmobilealex and they initially said my phone was fully compatible too. When they weren't able to fix my issue they said it was uncompatible.

I paid for a one year subscruption and wasn't able to use any data. They are saying i'm not entitled to a refund based on their refund policy. I don't think I was at fault in this. Their website and customer service said that my phone is fully compatible which is why I switched to mint. After I switch, now suddenly my phone isn't compatible and I wasn't able to use the service properly for several months. How am I suppose to know if my phone suddenly becomes uncompatible. I was very happy with mint and their service, but this is very disappointing. I belive I should get a refund for my 1 year plan which they are refusing.

[Update]: lol, now they're saying my phone is locked even tho I've used multiple carriers on it. They just keep on coming up with some new bs everytime I prove it wrong.

[Update]: they're now saying my phone os locked even tho I've multiple other networks on it. Then they switched to saying my phone is a 2g technology phone which is absurd. Everytime they just make some new bs excuse and not accept their fault. They're trying to give me bs untill i give on the refund which i wont.