Poor Customer service from Edgars.

3 months ago I tried to close my account and they let me know I owe them R46.00 I cant close my account . That i understood and i made the payment. Two months ago I closed the account for good which they was happy to do except now i have over paid my account with more than R1000.00 and they do not let me know. Ever since the 14th May I have been trying to get my money back from them its two months later and i have not received a sent back calling them ends up in me just being upset and them not giving me any answers. I have also send numerous emails to customer service.