Said he was from the technical department at Microsoft and my computer has a problem.  I told him I don't have a computer and he said I was lying to him.  I guess he's an expert in lying.

I receive repeated phone calls from this number multiple times daily. I do not answer and they don't leave any messages. When I attempt to call back this same number, I get a phone company message saying that this number is no longer in service! How can I block these calls?

For your land line  you can buy a call blocker, a programmable electronic device that plugs in between the wall and your telephone.  It also plugs into the nearest electric outlet.

For a smart phone your phone may have an app pre-installed or you can download one.

For your simpler cell phone ask your carrier.  Or put the pest in your contacts list and assign them the ring tone "no ring".  That won't stop the calls but it will make them easier to ignore.  You'll need to empty your voice mail occasionally.