caller told me my computer was being hacked and to follow his instructions I hung up

I just got a call from this number saying they were the IRS.....person female named Nicky....gave another number to call back.  I didn't get that number since I was doing something when I took the call.  I tried to call that number back but it is constantly busy.  This is a scam...right?

Just got a call from this number. The man said that Windows on my computer has virus and wants to help me fix it. Don't these guys know this is the oldest scam in the book?? I proceeded to tell him that he should be ashamed of himself and his parents would be so disappointed with him if they knew that he stole from people. I told him that he should try to find a job helping people, not hurting and stealing from people. He just argued with me. Maybe he'll think about that tonight when he's laying in bed. One can only hope!

have received several calls from 206-708-2849.....it rang, I didn't answer, they didn't leave a message and hung up - ANNOYING!

Annoying call. No message, number disconnected.