Unfair business practise

At the beginning of this month I went to view a place advertised by this company in Glen Austin. The agent Carly Tlhapa who was assisting me in the process told me that I can pay any amount to secure the place which I did. Unfortunately, due to unforeseen circumstances I decided that I will no longer move in and informed the agent right away which was on the 17th of the same month. I have not signed any lease agreement to bind me. Now these people are refusing to refund me the R3000 that paid. I am telling them to put it in writing why the refuse becuase I didnt sign anything and never stayed in the room. Please they need to explain this unfair business practise as I need the money to my rent that is due on Tuesday.