I received a call today from an unknown number, however, they left a message. The man's name was Vince Chambers and he said he was calling from NCS Offices. He said he received two formal complaints on me. One was for breach of contract and one was for attempt to defraud a financial institution. He told me that I was to call this number (877-239-1893) within 2 hours with my case # or I would be served papers. I am not sure if this is a scam or what, but I am worried. Please advise me on how to proceed.