AIDA Properties Boksburg does not pay back rental deposit-Dont use them at all

I rented my flat through AIDA for a year lease ending 31 Dec 2024.Exacly on 25 Nov 2024 gave notice that wont be renewing and they must pay back security deposit to tenant as i was happy with condition of my property.I have been trying to get Denver Ramnath(The principal) to pay my Tenant his depsoist but he dosent answer emails, his phone goes to voicemail, he blueticks whatsapp messages.Any Real estate body or commission i can take this up further.