Got call11:23am on 7-10-14 didn't answer.

Received a call from 412-773-7561 on a private cell phone.  The message said they wanted to be sure that Susie (unknown to me) was receiving everything from them that she should be and to please return the call to 1-855-287-2993.  I don't have a clue who these people are, who they are calling for or how they got my private cell phone number.