Affiliate Marketing Secrets

Yesterday my sister told me that I was sending out messages to people via Hotmail, when I tried to log into my account I couldn’t, it was saying that someone else was on it. I called a number that (supposedly) was Microsoft and filled out a “MSN recovery form”. They went in cleaned my computer and installed a Microsoft security essential. They were asking for a $100 to install/cleaning process, but I cancelled my Credit Card so it didn’t go through. So now I’m worried about my computer, email, and everything else that’s on it. (When I called the number “MSN hotmail support”, they said they worked with Microsoft, but today I actually reached Microsoft and the said they do affiliate with them.)
So my question is, how do I get the hacker off my computer to stop all this, where can I take it in to get it fixed, who can I call that will help me, and how can I get my Email back.
Please, Please HELP me, I’m freaking out!! I know it’s my fault, but I really did think they were part of Microsoft. And please don’t bash me for what happened, I’m already stressing out.
Thanks a bunch to whom ever helps. I appreciate it sooo much.

Yesterday my sister told me that I was sending out messages to people via Hotmail, when I tried to log into my account I couldn’t, it was saying that someone else was on it. I called a number that (supposedly) was Microsoft and filled out a “MSN recovery form”. They went in cleaned my computer and installed a Microsoft security essential. They were asking for a $100 to install/cleaning process, but I cancelled my Credit Card so it didn’t go through. So now I’m worried about my computer, email, and everything else that’s on it. (When I called the number “MSN hotmail support”, they said they worked with Microsoft, but today I actually reached Microsoft and the said they do affiliate with them.)
So my question is, how do I get the hacker off my computer to stop all this, where can I take it in to get it fixed, who can I call that will help me, and how can I get my Email back.
Please, Please HELP me, I’m freaking out!! I know it’s my fault, but I really did think they were part of Microsoft. And please don’t bash me for what happened, I’m already stressing out.
Thanks a bunch to whom ever helps. I appreciate it sooo much.