A Sydney cleaner sought repayment of a claimed debt of $25,000 from controversial Sydney businessman and councillor Salim Mehajer in court on Wednesday.

But Cr Mehajer, the deputy mayor of Auburn, representing himself in a sharp blue suit, argued he had nothing to do with the man's debts and had never entered into a contract with him.

Instead Cr Mehajer argued the defendant should refile his case and seek to reclaim any alleged debt from two other companies, one which happens to be jointly run by the council's mayor.