Sar & Associates Collection Agency Scam Pantation Florida

 I received a letter yesterday from Sar & Associates that I owe them $1,450. I called because I don't know who this is. They told me that I took a payday loan online on March 22, 2012 through loanshoponline for $300-400. They said they got the loan from LTS Management. They threatened for me to pay or I will have legal action against me in 30 days and they will put it on my credit. I repeatedly explained I didn't know what this was. They reaponded, "most people don't ," as if I was lying. They were not helpful and could not provide me with any information except the last 4 digits of the bank account number they said the funds went in. They wanted me to give them my bank information to go on a payment plan and seetle, but I didn't because I have no clue what this is. I looked online and Lts management doesn't even exist. Sar & Associates is listed as fraud , and several other people got the same letter I got with the same date (Oct. 15th 2915) owing the Sam amount of money. This is a scam and they need to be stopped!