T-Mobile USA review: Overcharging and dishonesty

In July of 2021, I cancelled my T-Mobile account. I ported my lines over to ATT. I did this because this is a business phone and I had bad service in my office. Calls would drop and sometimes the phone would not receive calls. This is bad for business. After porting over my lines and canceling my account, I received what I thought was my final bill and I paid it. I did not receive another text message telling me I had a bill due, as I did every month since signing up. Over nine months later, I received a collection notice for 70 plus dollars. I called and had a very long conversation with T-Mobile and even though the numbers were ported out, they did not close the account. UGH, what am I paying for if I do not have service! I could not log into the account, as I did not have an account anymore! We argued about this for a long while, and they wore me down and I paid this as mine time is worth more than the 70 plus dollars. They assured me the account was closed. Months later, I got another bill for 130.00+ - it's like Groundhog's Day... same conversation. I paid the bill and guess what!? I got a bill months later for 84.00. I am DONE! Another hour plus on the phone and they of course say that the accounts closed and that they have noted in my account that they will take care of it and to trust them! I asked for an email stating this. Oh, but they cannot do this! Okay, a text? Nope, I am not with T-Mobile so they cannot text me. Okay, text my mother's T-Mobile account. They can do this. The text does not say it is from T-Mobile, and it says that we had a conversation and that no further action is needed. No names, details anything. Worthless. I am still on hold as Arabella, who I have been talking to, says that she is transferring me to her supervisor. It has been 20 minutes and obviously, I have been launched out into space, the endless loop of no man's land. I had asked before she transferred me, the name of her supervisor and she could not give me a name.

Now, I am not a stupid person, although, paying these bills repeatedly might say otherwise, but how could elderly people, people with disabilities maneuver this BS? I see that this has been an on-going problem for T-Mobile, when is someone going to do something about this. It is dishonest!