How do I get rid of my hacker

Well he got in some how. I changed my iCloud per and made passcode. He is constantly changing my passwords. I set my phone up and he tears it apart. Google can tell the difference.dHe does things that keep me from doing things I need to do . Order medicine, get phone calls. He constantly doing something and I go in circles. I even have a vpn on my phone. What do I do. He is a genius. I mean he has put android code on my iPhone. I can share the files with you that prove it.

Ty for responding to me