"tmobile diagnostics keeps stopping" galaxy s20 pop-up

It's pretty bad if NO ONE from t mobile is answering back to any of this. And no one from there has bothered to help fix this issue. After someone has hacked T mobile this has been going on. T mobile owes us a fix  and if anyone's information is out on the web they need to protect us as the jacket said T mobile 2as easy to hack into. Who knows what they planted. 

What say you T mobile anything .... Or are you going to hide