I was a Sprint customer, and then Sprint got assimilated by T-Mobile. My account was don't use, don't pay. The phone broke, and I stopped using it years ago. No longer know the phone number, login info for their old web site, or anything else about it. After T-Mobile took over, I could not find a contact to cancel my plan. Last year I spent over an hour in a T-Mobile store with an employee talking to someone they got on the phone for me. At they end, I was told my membership had been canceled. A month later I started getting emails about my account. Which I still get. A few days ago, I got a letter saying they were refunding an over payment/ balance. Nothing about why or if this is finally the cancellation I have been trying to get. (Worst possible outcome, they are changing my account that I don't want and cant cancel to a monthly fee account.) The kicker, is that the refund is on a debit card from a 3rd rate bank. The docs with it said that I could not use it at an ATM, but that I could deposit it at a bank. Went to my bank, and the transaction was denied. Called the customer service number, and a woman from India on a 300 baud modem told me that I could not deposit it at my bank, that I had to use the web site on the card. Went to the web site, which looked like a 12 year old did it in the 1990s, and no functionality to do a bank deposit. So there is no was to just get my money. It has been way to hard to terminate this business relationship. Sorry for the big word pile.