Received improper calls from XXXX XXXX XXXX. Her call back is XXXX XXXX XXXX. Did not state who she was with, what the issue is except that I " was used as a reference '' which is bogus. Have noticed this number over a year on my caller ID list but never left messages until this week Research on line indicates this is Delta Management who is a debt collector. I have never received anything from them and i have no debts having just checked my XXXX free credit reports. Their reviews under this number projects a very negative image and questionable tactics and objectives. They have no business contacting me by phone which is listed on the Do not Call list. I suspect they are preditory, seeing if they can con you into paying on an old debt?