SAR & Associates Sent bogus debt collection letter Plantation Florida

I received a letter from SAR and Associates this morning, stating that I owed $1,450 dollars for a Payday loan originally taken out in 2012 from a company called LTS Management,  I checked my bank statements for that month, and never received the money, and doubt that i applied for it.  Furthermore, I discovered through online search that LTS Management was a PayDay Loan Provider, but was shut down last year.  

I spoke to a Mr. Daryl Marshall Operator # 0071 at SAR, and explained these facts to him.  He insisted that I owed the money, and if I didn't make payment arrangements, I would be sued.  I again explained to him that the debt did not exist, and that LTS Management no longer existed, but this didn't seem to impress him.