It is extremely difficult to help you if you give only part of the info.
Since the page is online the account is not disabled and Facebook did not disabled it and Facebook did not disabled you, that's why they do not respond.
The person who removed you from the account is your friend who you appointed as administrator.
I suggest you contact your "friend" if he is still a friend and ask him to solve the problem.
You should not have another person as admin on a personal account, only on business account.