JACKSONVILLE, Fla. -- A United States Postal Service letter carrier is facing theft charges after allegedly asking people along his route to borrow money for reasons that police said later turned out to be untrue.

Gregory Michael Niebel, 66, of Jacksonville, was arrested November 12 and is facing charges of Grand Theft, Petit Theft and Organized Fraud, according to a Jacksonville Sheriff's Office arrest report. Niebel admitted to borrowing $27,562, but investigators said they later determined that amount was actually $33,550.

Pablo Cortes says he was of Gregory Niebel's victims.

"I never got a penny back, not one penny back," Neibel said.

Cortes said the person he knew as his mailman developed a relationship and then started borrowing money

"He was just using me, lying to me and abusing me," Cortes said.

Cortes is retired and living on a fixed income said his losses are in the thousands, maybe over $20,000.

The case against Niebel was initially investigated on April 30 after the Florida Department of Law Enforcement, the Office of the Inspector General and the USPS received a complaint from one of the residents along his delivery route.

Cortes said Niebel asked him for money from December 2009 to February 2013 and over that period of time, he told officers he loaned Niebel $19,685. Cortes the complaint said Niebel told him his fiance'was expecting a settlement from a lawsuit filed against the Broward County Sheriff's Office. Niebel did not pay him back, according to the report.

Niebel told several other customers he needed money for various reasons: his fiance' had cancer and needed money for medication; his fiance'needed medication for a brain tumor, but later died; and that his fiance' was sick overseas and he needed funds to get her back home.

In August, according to a JSO report, Niebel's fiance' was interviewed and said she was not sick and was not expecting a settlement from the Broward County Sheriff's Office. She told JSO Niebel used the money to pay her living expenses because he did not want her to work.

The JSO inmate information database shows that Niebel is still in jail. He has a hearing set for January and his total bond is set at $65,027.