Microsoft (Imposter/ Spoof)

Type of a scam Tech Support

I got an automatic message on my browser when I tried to access my Facebook account. The message said that my IP address has been comprimised and that I had to call the number in the dialog box . If I did not they would shut down my computer. I called the number and the person sounded like he was from India. He then tried to charge me 299.00 dollar to clear my computer. The page I was redirected to had a Microsoft Logo on the left bottom (farely large). I said I had no money to give him. Then he said he would only charge me 99.00 dollars. The air message was malware on my compute, because I shut the browser window after I cleared my computer. I do not know if this is Microsoft or someone posing as Microsoft. Beware of this malware.