Unprofessional conduct and contract breach

I have had a negative experience dealing with this Property agency, Especially concerning Tammy ****, our contact person related to the rental of a 2 bedroom apartment unit in Burgundy Estate, Cape Town. During the COVID-19 lockdown period of 2020, I did not miss one payment, as per the agreed contract, and unfortunately had one late payment in September '20; however, I owed this agency R 0. At the end of the lease agreement, during the exit inspection, we have left the unit clean and personally spent time ensuring a perfect handover, with issues remaining issues as pointed out during occupancy of this unit. However, Just Property somehow managed to not only squeeze out an odd R 2000 from our deposit due to "Maintenance" requirements but did not manage to comply with the contractual return of the deposit, 7 days after exit inspection. Until today, 3 weeks later, I still did not have my shrunken deposit returned and my last message received from the agent was that they "...made a mistake and have sent my deposit to the LAND LORD's account..." instead of refunding me. Not only am I disappointed in the breach of contract but also the poor professional performance and treatment received. I will not be recommending this agency due to my own negative personal experience.