Deposit refund and Bad service

I moved out end of March 2026, no deposit received and Njabulo Mthethwa who has been sending feedback on the progress of my deposit has not responded to the email i've sent on the 21 April 2026 as they wanted to charge me for a stove light that is not working of which the stove light has not been working since i moved in and i did not even need it. The bedroom plug which is working but it's not switching off and that is their workmanship issue not my issue and how would i damage a plug like that because it has been like that since we moved in and we hardly used that plug. They are withholding my deposit because they can see that they cannot take more than the amount they wanted now they are charging things that are not my fault. It's been 2 months now and this is really disappointing i must say and the bad service From Njabulo who is not even responding to my emails. The rental act says "Return of Deposit: The deposit must be returned within a reasonable timeframe after the tenant vacates. Typically, this is within 7 days if no deductions are necessary, or within 14 days after repairs with itemized invoices for any deductions" and also it states " In South Africa, rental deposits are legally required to be held in an interest-bearing account for the tenant’s benefit, with the amount and handling governed by the Rental Housing Act (RHA)."