MTN Poor customer service!

On the 13th May i tried buying 50GB Data on the MTN app using my FNB bank card, R299 was deducted from my account but i never received the data. Now i am being send from pillar to post by MTN, when my bank has confirmed that MTN as the merchant banked that money from my card on the 16th May. I gave MTN the reference number for the transaction including the transaction history supp**** by FNB… that they got the money. After waiting for a response from you, which you never did i called and enquired about my query, instead you are telling me again to go back to my bank. This is ridiculous, you have banked the money from my account for the transaction! Do you have any idea of the inconvenience you have caused me?