When I called the number back after I missed the call the whole greeting was in Spanish and I had no idea where the call had gone to. They said that they had received a collection from another company that I previously was working with. His name was Rocco Graziano and he said that I needed to work with him on this account. I told him to put it in writing and send it to me then we can talk. He said it was legitimate but who knows.
I've received several calls from this number, always while I'm at work, but they never leave a message. No message or web information tells me it's probably a scam.