Who called from 2107807493

This number calls me up to 5 times a day and when I answer a representative then picks up and asks for Mr. or Mrs. and I finally asked them to take me off the list and the representative asked if I had already talked to someone and I said I do not want to and to remove me from the list.  She advised me to the website "do not call list" and register.

I don't want calls from this number 210 780-7493

They called 4 times in 7 hours, they are selling security alarm systems