I called a 1-800 number as I was having a hotmail sign in problem. ?They advertised as hotmail support then wanted $199 to rememdy the problme

I am having problems signing into hotmail acct. I called 1-800- 380-4536 as they called themselves hotmail support.  After having me log into another site and allowing them access to my hotmail acct and computer they wanted $199 to fix the problem.  I refused but now am afraid they have accessed all my accts.  I still can't get into hotmail acct.