Change facebook business account to user profile ?

[Jack]

i cant access my facebook account . it was working like normal like 2hours ago , but when i checked recently . i came to facebook.com/advertising page , and i cant see my profile or do anything , other than make an Ad or make a page . im thinking this is a business account , but i ddnt change my account to business , and i want my account back , if it was converted to a business account ... how do i change it back ? and is there a way to talk to the support team , maybe they can do something ??