These are cybercriminals intent on getting control of your computer and stealing your personal information. They have no intention of stopping the calls and do not participate in the DNC list. Go here for a detailed discussion on call blocking devices:
http://800notes.com/forum/ta-5d4e343675a5629/call-blocking-devices
Funny..I just got the call too..said my computer was giving them messages that I had a virus..I said my computer has been boxed up for 8 months so no way this is so...told him he was not going to scam me..so he continued to tell me to eff off five times and then was making kissing sounds....gross.
Called saying he was from Microsoft support.
Asked him if he was Bhen ghaand Chhod and told him I had a Mac .For some reason He seemed really offended at what I told him.