Around October 2017, I purchased a brand new Galaxy S7. About two weeks ago, it started overheating while it was charging. After that, it would not retain a charge and the battery would rapidly deplete. I contacted T-Mobile and they replaced it with a refurbished phone. The refurbished phone did the exact same thing....overheated, the battery drained, it would continually try to update T-Mobile software, shut off and having performance issues. T-Mobile issued me another refurbished phone which I picked up yesterday. Again the replacement phone is not working, the same issues persisted. This time the issues happened while I was at the T-Mobile store (for over 2 1/2 hours). The staff at the store called Customer Care and tried to explain what was going on. Customer Care suggested that I send the phone directly to Samsung since there were no know issues with the phone. The young lady at the store then asked what was I supposed to do if I send it to Samsung....I wouldn't have a phone. This morning I tried to call 611 about the issues with the phone, but it shut down several times while I was talking to Customer Care. I called from a line land and spoke with another rep. She suggested that I upgrade to another phone. I asked what would happen to the balance of the Galaxy 7. She told me that I would have to pay off the Galaxy plus the upgrade. I about lost it by then. I asked why would I pay for the phone...it is not working and none of the replacements so far are working. So she is sending out ANOTHER refurbished phone to the store...It should be there by Thursday. I do not have a cell phone to use until then because it shuts off and restarts itself every 10 minutes (Which happened when I initially tried to talk with the first rep. He actually called me back and the phone shut off on him twice). I understand there are certain procedures that must be followed but this is ridiculous. This will be the third replacement phone. T-Mobile is blaming Samsung and Samsung is saying it has to do with T-Mobile's software update. I am stuck in the middle with a useless $500 phone. This is the first time in the 19 years that I have been with this company that I am ready to switch to another wireless carrier.