Erroneous Charges

I need help solving a billing dispute.. to summarize for maybe the fourth time. The last customer service rep was trying to fix my issue but our call was disconnected as he was waiting on upper management to figure out how to refund me the money. After porting my numbers and returning the T-Mobile router, I continued to be charged for the router, an apple watch that was tied to a phone which was ported out and another line which was tied to a phone which was also ported out. The third line that I mention is kind of ridiculous how it was explained to me, but T-Mobile creates a phone number to be able to apply the promotion. In total, T-Mobile collected between $432.29 to $639.31 for services that I never received. 

The router was returned on May 30, 2024 and the other 2 lines were ported out in early May 2024. I was charged a full bill in May, June, July & August.

I dont have time to be waiting on the phone with customer service, I have tried multiple times to resolve this over the phone. Please do not apologize, just make me whole asap. 

¡Gracias!