You know Tmobile doesn't have contracts so you can leave any time you want.
They do have equipment installment plans that would need to be paid if you left though.
Have you tried contacting T-Force through Tmobile's Facebook page to get this issue sorted out?
T-Mobile have updated their Customer Service team. They are called a “Team of Experts” now. They have thrown away the the practice of customer service reps passing the buck. Now you get your own “Team of Experts” to handle your problem, based on your demographics. I have talked to them (twice) to upgrade two different sim cards for two seperate devices, it was a pleasant experience. I wasn’t passed along like cattle. Their hours of service i believe varies based on your area I guess... but its not a 24/7 service.... these guys and gals do sleep.... but if you need the customer service 24/7 line.... you may get the shenanigans that we are accustomed to when we really have an issue.
I wouldn’t give up. I think based on T-Mobile‘s terms and agreement they are only liable to give you back 3 months of ($$$$) made in error. So I would advise to contact T-Force via Facebook / Twitter etc., as gramps28 stated. But understand.... if you give up now, you may not be entitled to anything if you begin to start complaining about billing issues 6 months from now..... even then.... if there are 7 months of billing issues.... they may pull up the agreement and only refund you 3 months of money that was billed in error.
i really hope what i wrote or what gramps28 posted is beneficial to your bottom line.
Don’t give up.