New Number - calling to say will serve at work if don't resolve today!

(855) 440-3957 - Friend got call from this number stating for old payday loan and then that had over drafted Wells Fargo account.. wanted $500 today or $174 for 6 months not sure where they learned to do math, or they would serve him at work the next day - if proceeded to court would be more like $3000 - nothing on any local dockets - already checked this morning for him - didn't give him any company name - I told him if they call again to tell them to send debt validation in the mail and not to call again. Just wondering if any one else had seen this number - not much coming up when Google it - relatively new number - with not much feed back..