Process Servers trying to scam you into believing you owe a debt and theyre the ones collecting it

Received call stating they were process servers and my social security number was identified in one of their records. I told them they will not get any information from me and take me off their calling list. They gave me a bogus case reference number and asked my to call 1-877-673-2015 which I did. The person I spoke with said the company PDI is located in Irvine California and also asked about my social security number. I told them the same thing, I don't give out that information and take me off their calling list.
Beware of this scam!!!

Got a call from this number today calling themselves PDI Process Servers - For some time now, I have been receiving calls about a Wells Fargo checking account which is outstanding dating back to 2008 (I can find no record of such a debt). The first time this came up, I called Wells Fargo and they had no record of this kind of debt, nor have any record of selling it to any third party. When I ask for documentation, I am told they already sent it to an old address and do not have to send again. Now, the same people called my work to tell me that a process server with two "uniformed officers" will be coming to my place of work tomorrow to serve me with these papers - I called the sheriff's department, and they have no record of this. I guess we'll see if they show up - I had to tell my boss these phony process servers will be showing up.

I got a call from this number 305-999-7809 this morning wanting to know if my husband was going to be home between the hours of 12-2:00 so that a process server could come to the house.  I asked him why he didn't call him directly but he couldn't give me a reasonable answer.  Said he got my number from "court records".  And that I needed to pull over (I was driving) and write down another number that I needed to call.  I told him to just come out to the house, but he hemmed and hawed at that.  So I finally told him that I knew he was a scam and hung up on him as he's trying to continue the conversation.  Needless to say, he will be reported to the authorities.  This is the second time I've been called regarding the same scam.

The call was from Florida 305.999.7809 said he was a process server and to call this number 909.264.8497 within an hour. I called the number a man answered "hello". I said I was calling regarding the case # given to me. He asked me did I get a call at work. I asked what did it matter, he said it mattered because we have your place of employment for a garnishment and it can not be stopped unless I had an attorney. Do you have an attorney he asked? I said what is this about. He said are you at work? I told him you obviously don't know what is going on, so I am going to assume this is a scam. Good bye and hung up