Delay on responding

Good Morning <br> <br> I would like to find out as to what is so difficult to refund a person after having submitted all the required documentation after having paid an incorrect amount by accident. <br> <br> I have paid my account an amount of R 8000 by accident instead of R 800, to date I have not received any response from you with regards to the refund I have requested. <br> <br> I have submitted a letter and proof of my banking details and Edgars Sandton City. <br> <br> <br> If that's how you choose to do business and capitalize on peoples mistakes then please be rest assured that I am ready to leave and join another retail store, there's plenty of them. <br> <br> I will be left with no choice but to close my account and go to where I will be treated fairly.