Call your cell phone provider and block this number. It can be done. You answer andnot careful and they will try to strap you with an international call.
I get calls from this number every other day or so. No message is left on my answering service. When I call the number I am put on hold for a long time and I eventually give up waiting.
Someone from "American Debt Solution" called me today from this number. I immediately told him to take me off their list. How did they get access to my cell number?