MS has now ditched them as "partners":
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Comantra is a Technical support company...we are [a certified Microsoft partner]
Microsoft dumps [India-based Comantra certified Gold]
partner over telephone scam claims (21 Sept-11)
What is a Microsoft [Gold] Certified Partner?
• I received a Phone Call From Someone claiming I have a Virus
'Microsoft Support' calls - now with ransomware! (02 Oct-13)
When fake malware phones - Malware Protection Center blog
What to do if you think you have been a victim of a scam
FTC complaint names six businesses with operations in US and India that tricked consumers into spending hundreds of dollars on bogus technical support (04 October 2012)
HOW TO Report such scams to the FTC (US-only)
HOW TO combat tech support phone scams
HOW TO Avoid Phone Scams & Other Cybercriminal Tech Support Scams
HOW TO Avoid [phone & email] scams that use the Microsoft name fraudulently
[Last Revised - 03 May 2014]