Got the same call as others - this is the second call today (first was at 9:15am from another number, second at 12:09pm from this number)  said my home computer had been hacked and that he needed to call to help me get through the issue so it wouldn't crash - told him I'd be home at 6PM.  Now I'm blocking the numbers.  Damn scammers.  Thanks to all who wrote - it confirmed my suspicions, since I'm less than saavy with the tech side of computers.