Refund requestested several times - Still not done

I joined The gym last year and signed a contract to pay a monthly fee of R185 via debit order. I provided my banking details in order for the debit order to run. My first debit order ran end of September 2014 and I noticed that I am being debited an extra R370. I enquired with the gym and was advised that it will be sorted. The extra debit order of R370 kept running off my bank account until end of January 2015 after which I called again and insisted this be investigated. I spoke to Videsh, who advised that someone's else's membership fee was running off my account and the funds will be refunded to me. I spoke to Videsh again on 12th, 18th and 23rd February and each time he advised me that the refund is being done today. Since I never received the funds I called again on 26 February and requested to speak to his manager. Mohammed, the manager then advised me that he checked and the refund is loaded on system, I will receive my refund in 2 portions on the day my debit order runs. My debit order ran at the end of FEB and nothing was received. I am truly disappointed by the service and the fact that no body could be bothered to assist a customer - when it was their mistake.