Refund

Good day, my name is Tsholofelo Mojela. I made an online purchase via MrD delivery, I was charged twice for the purchase I made. First I did an Eft but received error from tymbank. Then decided to make payment via a debit card (capitec) and money was deducted. Later in the day I received an sms from tymebank that money was deducted. I have escalated the matter that I was charged twice, attached both my tymebank and capitec statement to show proof of payment but I receive response that only one amount was deducted can you kindly assist Tsholofelo ***