Received a call from a male. He said for Art(my son) to contact them immediately or have his lawyer contact them. Otherwise they would serve the documents at his place of employment

It's a scam. There's no such company as EPS. It's also a mobile number. Their trying to collect money on old debts, that have already been paid off or the statue of limitations has run out on the debt. Please report this to the Federal Trade Commission, Consumer Affairs & to your state's attorney general's office. DO NOT CALL THEM BACK!

they left threatening messages on my cell phone.  When i called them back they were nasty and threateninge

They "Michael Stevens" and left a nasty message about serving papers and get an attorney. They would only make 2 attempts before they take actions.

Called left message saying they important docs to deliver smtg about at work. Only 2 attempts. I think his name was Michael and if any questions to have me or the att call