You have been scammed and are at risk already. Any financial items on your PC? Credit card payments/billing? If yes, cancel those cards NOW!. Bank online? Have a debit card? Call your bank ASAP. Start changing all your passwords as well.
Remove Adware:Win32/Adpeak (Virus Removal Guide)
http://malwaretips.com/blogs/adware-win32-adpeak-removal/
There is no removal guide for TROJANDOWN/LOADERWIN32/FILCOUT.A, but removing the other might remove this as well. If not, start running these tools.
You might not need all of these, but start at the top and reboot after each one.
Remove it with these tools. Check for updates first and then scan with each one at a time until your machine is clean.
TDSSKiller Rootkit Removal Utility
http://www.bleepingcomputer.com/download/tdsskiller/
RogueKiller
http://www.bleepingcomputer.com/download/roguekiller/
SuperAntiSpyware
http://www.superantispyware.com/
AdwCleaner (Free)
http://www.bleepingcomputer.com/download/adwcleaner/
Malwarebytes (Get the free version)
https://www.malwarebytes.org/free/
When offered, uncheck: Enable free trial of Malwarebytes Anti-Malware Premium.
Junkware Removal Tool (Free)
http://www.bleepingcomputer.com/download/junkware-removal-tool/
HitmanPro (30 day free trial)
http://www.surfright.nl/en/hitmanpro
This is a scam that has been going on for years. Microsoft never makes unsolicited phone calls.
Is that call from Microsoft a scam?
http://answers.microsoft.com/en-us/protect/wiki/protect_other-protect_scanning/is-that-call-from-microsoft-a-scam/6718e389-8a00-4e4b-aca1-d07298ea4c19
Report a technical support scam
http://support.microsoft.com/reportascam
Is it a genuine call from Microsoft?
http://www.computeractive.co.uk/ca/pc-help/2134917/genuine-microsoft
Avoid tech support phone scams
http://www.microsoft.com/en-gb/security/online-privacy/avoid-phone-scams.aspx
Do not fall for phony phone tech support
http://blogs.msdn.com/b/securitytipstalk/archive/2010/03/09/don-t-fall-for-phony-phone-tech-support.aspx
Aggressive, persistent Windows tech support scammers continue to stalk
consumers
http://www.computerworld.com/s/article/9248122/Aggressive_persistent_Windows_tech_support_scammers_continue_to_stalk_consumers
What is a Microsoft [Gold] Certified Partner?
http://securitygarden.blogspot.com/2011/09/microsoft-removes-gold-certified.html
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Assuming you get everything back to normal, keep Malwarebytes and SuperAntiSpyware on your machine and do an ocassional scan.
Good luck.