URGENT, PLEASE HELP ASAP

I have an urgent problem. Today I got a call from a TN number – 865-223-5506. I picked it up only because I have a friend who lives in TN. It was a call from a guy with an accent from what he said was United Legal Services. He said I am being sued and he has the affidavit with him. The number he said to call him back on was the number he called me with. He said he has to call my management and that my references are being sued, too because of me. He said it was for check fraud and something else. I asked what company he is from and he said DVB?? He said they present companies like Cash Net, etc. but this seems to have Geneva Roth written all over it. I have gotten confirmation from VIP Cash yet but this just seems to be Geneva. I told him I need to talk to my attorney general and obtain other legal advice before giving him a word. What should I do? I think he called my work because my supervisor was on the phone than said it was a personal matter and transferred him to the head supervisor. And now all of the supervisors were called to a meeting. I did this on my company computer and used company email but this is so stupid! I live in NJ, btw and I’m almost 100% these aren’t even legal. As you know, I tried to work with these people. Can someone please give me advice ASAP?? Thanks