Kids syncup won't turn on

This seems to be an ongoing issue. I have to wonder if T-mobile is knowingly selling these faulty watches to force customers to pay a few more bucks a month. I got this watch for my daughter. 3 months after she got it the watch got stuck on the T-mobile logo. It would not turn off unless the battery died and it would not go past that logo. Knowing the sales associate and I talked about the insurance and I clearly said I want the insurance, this watch is for a 6 yr old, low and behold. I was informed it was never added. I contacted T-mobile and was told since there isn't insurance on there I'm just out of luck and stuck paying for a watch line that they know I am unable to use because the watch will not function. There is no external damage to it. I did a hard reset and now it is stuck at the screen that says it is preparing for an update, do not remove from the charger. It has been on that same screen for two hours now.