How do I remove unauthorized corporate control from my iPhone and accounts?

i just figured out that my iphone is being used as a corporate device..and it shouldnt be! I have no business affiliation whatsoever! I need to know how to get my devices and accounts removed from this immediatly..

At first, i thought i was getting hacked (well still am in a way) because it is a huge breech of my privacy! This person has complete control of my iPhone and multiple accounts. They track my location, read and write messages, took over my social apps, and have been downloading root software which is ruining my device!

please help!

[Re-Titled by Moderator]