ACCOUNT DEBITED NO DATA

If they talking about a network that has the worst service is VODACOM. bought data on the 17/10 through the App and paid with my account which was debited but data not allocated. I called to find out what happened with the data and was instructed to send proof that I purchased the data and screen shot from the Vodacom App. Screen shot status shows failed , bank transaction shows amount debited from my account. Received a mail informing me data will be allocated at 8am if not back office will credit back the money. 2nd call was instructed by a manager to refer to my bank for the refund. 3rd call I was informed the funds are showing as reserved and need you need to send proof that the amount went off your account. 4th call again telling me about the failed status from the app but my account was still debited no refund. I have spoken to 5 different people and I have sent more than 5 emails showing the transaction as being successful and proof that data was not allocated. this is frustrating constantly calling and wanting a refund of my money.