Double payment not refunded after 3 months

Hi,<br> <br> Mango charged 2 different credit cards of mine R754 for 1 booking in August due to an online technical problem. When I reported it (1 hour on the phone), they confirmed that it was in fact processed twice, but I need to report the exact technical error to IT, which I did. This was in August. Despite following their exact requests, and following up, I am now being ignored with no refund. <br> I believe this to be ********** behaviour either in their processes or through the incompetence or negligence of their staff. Please urge them to contact me and process a refund with urgency.<br> Thanks,<br> Candice Goodman