T-Mobile USA review: Apple air tags

My wife went into this T Mobile store for some technical assistance with her IPhone. She came home with 3 air tags. I asked her why she purchased air tags since we use another similar service, Tile. She stated that she was given them by the associate that helped her. I explained to her that she needed to take them back to the store as we have no use for them. She stated that she never purchased them and had no idea what they were. Fast forward to a few months later, I saw the box of air tags in her car. Apparently, she forgot to return them. I accompanied her to the T-Mobile store that gave them to her. The assistant manager Joseph said that the representative that my wife had dealt with no longer worked there. I explained the situation and he said we would have to change her plan and have the tags removed. I explained that she never asked for them in the first place but he insisted that this was the only way to take care of this. We asked for a refund for the months she was unknowingly charged for the service of the three air tags that were never activated. He said he was unable to issue a refund but his manager Alyssa would be able to provide a future credit. We were told that Alyssa was currently out of the office but she would contact us within the next few days. Over the past 3 weeks we have left multiple messages for Alyssa but we are always told that she is unavailable but she's received our past messages and will call us. Very poor service from this T-Mobile location and management. Upon contacting corporate, we were told that only the store manager Alyssa has the ability to issue the credit. Very disappointed. We keep calling and the employees that answer the phone always say that she is unavailable. They were charging her $15 a month for 3 air tags that were never activated. This went on for over 5 months and no refund or credit as of yet.