I have an Lg G4 phone, malfunctioning, if it turns on it goes straight to the red Verizon check off screen. I have taken it to 2 stores, 1 told me the phone was toast, one did go as far as giving me a tech support number, but I can't get through the prompts before I lose the call. The phone should be in warranty, the phone is insured. Why can't I get anyone to help