[Mswezey]

Just go into a Sprint store (one with a repair facility)

Most cases, they will look at your phone, find the problem and order you a replacement free of charge if you have TEP and no physical damage/water damage has been done to the phone.

When you go in be like :

Hey, I've called more than once to this store and yall just told me to hard reset the sucker. It's still doing the same thing. (tell them what exactly its doing)

Let them look at the phone. Hopefully they won't be an ass about it and just order you a replacement