Deposit money

2024 Feb we moved in to one of the urban task force flats, Windstead gardens flat in parktown. We signed the lease and we were told its 1 year lease fine, Month end June i put a notice that we are moving out Month End july fine, after moving out the inspection took place ans nothing was broken, now i am expecting my deposit money guess what? We were told that we signed a 2 years lease and we have forfited our deposit money just like that R5.500 gone.