So I got my tbolt when it first released and within a few weeks it was giving me some problems. I called customer serivce and they fedexed me a new phone to which the problems were no more. They also provided an envelope (more ilke a plastic bag) for me to put my phone in to send back. At first I was a little confused if this was indeed the envelope to send it back but I called customer service again just to verify and they send yes the envelope is for that purpose and just throw it in the mailbox. 2 months later, with no problem, I get a hefty 350$ in my bill due 6/18. I called CS again and they said they were put an investigation in and to call back in a few days. Anyone else have any similar experiences? thx.