Sorry to say, that but that sort of thing doesn't really exist. Not on iPhone and not on Android. If they did somehow manage to hack your phone, it would not show up on the screen in a visible way, it would happen in the background without your knowledge.
I know this isn't what you want to hear, but I really think you may want to seek medical help for schizophrenia. I mean, what do you have to lose? At best, it could solve all of this, and at worst, you've wasted some time and are back to square one.