I put "Telemarketer" as the call type, but that isn't entirely accurate.  This is one of those "Windows Support" scams, where they claim there's something wrong with your computer, that they'll fix free, but actually want you to install some software ("Remote Administration Tool") on your PC so they can take it over and effectively hold your files hostage, demanding money to reverse what they've done.  There really should be another call type for scams.  Don't cooperate with these crooks, or you'll at the very least end up spending money supporting them that you could have spent better almost anywhere.