No ticket issued but money taken!!

I attempted to purchase a ticket on 28 February 2015 for my brother to fly from Cape Town to Bloemfontein. Due to the Mango's policy that the credit card should be shown at the counter I opted for the SID option where the ticket is basically paid for by way of EFT. While I was busy with the transaction Mango's website showed that the purchase failed but I immediately received a sms from my bank confirming that the amount has been deducted from my bank account. Since 28 February 2015 I have been unsucessful in getting my money back or getting any response from Mango. I mailed support@setcom which is the company through which the SID option is run but they keep on saying that Mango is not responding to their e-mails. This is unacceptable and I would like my money back asap! I have spent nearly 60 minutes on the phone to Mango being tranferred from one department to the other. I have a 3 week old baby and that is the reason that I booked the ticket for my brother..I don't have the time to keep on following up. I also sent the proof of payment to Setcom but to no avail.