This comes after it emerged that Molangoane had "extended" his stay with Chippa, while also signing with Chiefs.
Molangoane and his agents referred the matter to the Premier Soccer League's Dispute Resolution Committee, claiming Mpengesi had forged the player's signature.
This was after his contract with the coastal club had expired at the end of June.
Molangoane told Sunday World he had not signed any contract extension with Chippa.
"It's not a contract because I didn't sign it," Molangoane said. "There's no contract between me and Chippa United, and Mpengesi knows that."
He said Mpengesi had booted him out of the team's camp before their game against Chiefs in Joburg in May after accusing him of signing a pre-contract with the Glamour Boys of Naturena.
"He told me he does not need me anymore and ordered me to leave the camp," he said. "But after few days, he came back to me claiming I still had a two-year contract with the club. I was surprised because my contract with them ended in June."
When approached, Mpengesi said: "I'm not going to comment on that. You must take his [Molangoane] story."
Sunday World understands signature experts were called in at the hearing last week to examine the contract for any elements of forgery.
The contract, according to Molangoane, pegs his salary at R96000 per month before deductions. He was also due to receive a R200000 signing-on fees.
PSL spokesman Luxolo September said: "PSL cannot say anything about the matter."