What business has this number?

A guy who said his last name was Anderson called me, saying that his client had filed a complaint against my cousin, and that he was trying to contact him, regarding bad checks and fraud. My cousin is a United States Marine, and has never done anything of the sort, and would not do anything like this. Please catch these criminals. I will also file a formal complaint with the FTC.

Man claims he is a constable and he will be at my job tomorrow between 12-3 to serve papers and to have 2 witnesses there. He also gave a different number then the one he called from saying to call it. It's a debt collection company

They left a message telling me that they will be serving me papers for a case. I dont have any cases that i know of. I dont know if this is legal but if you are going to serve me papers then do so, I have been served before but never threatened to be home for it. They say a company name or the people they are collecting for. so?????

I was told in message to have id and witnesses at place of business ; we arent open on saturday.