Who called from 8186664016

Caller ID said USA System. Let answering machine pick up. No message left.
Addded to block list.

Company keeps calling asking if I have a computer. Very rude by repeating it over and over and won't hang up. The name shows USA Systems

I answered phone, nobody was there. Caller ID says "USA SYSTEM."

Called to ask about my computer.  Unsolicited call, hung up on him.

This is the second call I received today. This time I tried to get more information. The person calling said they were "Calvin Connor" and initially spoke me that me was from Microsoft Technical Support.  He later said he was with 24 / 7 PC Help located in Miami Florida.  He asked me open my computer and "run" eventvwr.  He then told me that the errors I was seeing had to be removed. At this point I told him I was on the Do Not Call register and asked him to take me off his list. He said that he would not take me off the list.