See: http://www.microsoft.com/security/online-privacy/msname.aspx :
"Microsoft does not make unsolicited phone calls to help you fix your computer"
"In this scam cybercriminals call you and claim to be from Microsoft Tech Support. They offer to help solve your computer problems. Once the crooks have gained your trust, they attempt to steal from you and damage your computer with malicious software including viruses and spyware."
"Although law enforcement can trace phone numbers, perpetrators often use pay phones, disposable cellular phones, or stolen cellular phone numbers. It's better to avoid being conned rather than try to repair the damage afterwards."
"Treat all unsolicited phone calls with skepticism. Do not provide any personal information."
"If you receive an unsolicited call from someone claiming to be from Microsoft Tech Support, hang up. We do not make these kinds of calls."
This warning may also be helpful:
http://answers.microsoft.com/en-us/windows/fo ... b1-707add212065
Also, check out your Microsoft Windows license. The license will tell you that Microsoft does NOT collect personally identifiable information from you. Alarm bells should ring all over the place if someone calls you claiming that they are from Microsoft or are an official Microsoft Windows Tech Support agent and that they identified you or your computer personally based on information "Windows was sending out."
Regarding echotechsupport.com, here is the owner of that domain name, his purported street address and telephone number in India:
Domain Name: ECHOTECHSUPPORT.COM
Registrant:
Stephen Dsouza
219-223Deep Plaza Off LBS Marg
Mumbai, AK 40005
IN
Administrative Contact:
Dsouza, Stephen
[email protected]
219-223Deep Plaza Off LBS Marg
Mumbai, AK 40005
IN
+1.9920253672
Note, too, that this domain name has been in existence for only about seven months:
Registrar of Record: Domain.com
Record last updated on 13-Aug-2013.
Record expires on 14-Jan-2014.
Record created on 14-Jan-2013.
And here is a recent article from the Hindustan Times, bemoaning the fact that India has become the epicenter of fraudulent call activity, including those calls claiming to come from Microsoft or an "affiliated company" claiming to be calling to "fix" your computer.
It is worth noting that this website (800notes.com) turns up very often on the first page of Google searches when people are looking up a telephone number. I suspect that scammers have noticed this fact and are now trying to flood this site with a lot of fraudulent testimonials for fraudulent companies.
As a general rule, I would guess that NOT being found on this site AT ALL is the best recommendation this site can give to a company.
If you think that you are the target of an Internet scam, which this caller may well be perpetrating, and you are in the United States, the best thing you may be able to do is report it to the Internet Crime Complaint Center at http://ic3.gov/default.aspx .