It's a total scam, they will pretend to be a computer company and then extort money.

I keep getting calls from 609-755-2211 with no message.

Unknown  caller

I answered this phone number call. There was no response. A recording said in a low tone "Goodbye". I called the number back. It rang several times, and a recording said " This is a bogus call. Do not leave any messages on this phone". Should I as a senior citizen be concerned?