very very angry

This company am not happy at all I signed a lease with them in 2016 November to move in 1 of December 2016 after I moved out in April 2019 my deposit was never returned to me until they backlisted me saying am owing the the amount outstanding of R1712.80 for the month of 4 November 2016 from September 2016 the amount is been accumulating before I even stayed or signed and agreements with this company they are ********* they can not allocated the tenant that was owing them now they are transferring the amount to me