Rivendell Property Management Won't refund deposit

Rivendell property consiltants based in Centurion have withheld my rental deposit refund since 21 February 2020 .This was our deposit that was meant to be held in trust with accrual. I have sent numerous emails to the owner of the agency Garth Harper who has ignored all communication and demand for him to refund this money. I have gone as far as to go to his business premises and still he is holding our deposit without reason. I did a closing inspection with Garth Harper , to date he has not given me a finalised report if there are any outstanding charges due from me so there is no reason he has to withhold this money, he has given us nothing but a run around, I've even gone as far as sending him a letter of demand from an attorney but this brazen and unscrupulous acting business continues to hold our deposit. It is now over 4months since he has not paid back our money. Be careful of Rivendell properties they are unethical in how they act. I will not stop until I retrieve every single cent with damages and interest from them!