I have no way of contacting this other person and they are currently using up 1.5KB of my storage. I am only able to have a total of 5 apps because of this and my phone will no longer allow me to take any pictures. I tried to back it up to my computer in hopes that I would just be able to make a new Apple ID account but there was no luck with that. When I tried it said that I don't have enough available storage to back it up so now im stuck.