2 twice with about 9 minutes between calls every 12 hours

someone put my phone number with another person's name on an email list that got sold to many companies that deal with online educational programs. in the past two days I have had calls from 9 different companies all looking for the unknown female. my phone number has been on the federal and state no call list for many  years but does no good since the phony email was sent and sold. In each case i tell them to put me on the no call list and follow up with a complaint filed with the government no call site. Unfortunately this happens every time the school year or new semester starts. My husband is a teacher and the school email system was hacked.

Recieved calls from 720 842-7140. I questioned the  reason for calling my number and was told they would call back and I asked why and the female hung up

The same person keeps calling but changes the last four digits of the phone number 1-720-842-7140, 1-720-842-7089, 1-720-842-7086, 1-720-842-7087

keeps calling... what seems to be the same number except for last two or three digits...