first off, welcome to the forum. secondly, may I ask how do u know ur device was hacked? could it be ur emails? it wouldnt be an IP issue as vzw may change the SIM card instead.
dont worry, u dont need to be tech saavy. the forum is here to assist u. my emails were hacked before but its nothing to do with the phone. u definately need to get rid of ur email acct and start anew. is it ur gmail?