Tmobile activated a line with no permission, and have not refunded me.

Hello All, 

i am also very upset at the services that I revieved from T-mobile as well. I have been paying for a line for 3 years that I have sold the watch off of my plan. I was never and it did not cross my mind that I had to cancel this line. I noticed my bill was extremely high but I also had other installments on my bill which caused me to think that I was owing for extra things.. i veiled my bill and still it was not clear I had a extra line. Come to find out I also sold my iPad and I gave it away 9 months ago and that line was stilll there as well.. So I have been paying for 2  over a year… I have called T-Mobile and asked to speak to a manager and they stated to me that the can only credit back 3 months on line. I am a person that every dollar counts. I will be writing this week. I have had several bad calls with T-Mobile reps. I have my calls from the rep time… I am keeping track of everything… something needs to be done… T mobile has to take better care of their clients…