Triple payment for 1purchase

This is now my second hello Peter complaint about this problem. I am waiting for money to be paid back. I purchased a cellphone cover on the 12th or 13th November for R199. The amount only went of my account on the 21st of November. But then again on the 24th and the 27th. I took my bank statement to them and was told they will only refund me one transaction transactand gave me a reference for the other to do it myself at the bank. I called the bank and they told me MTN should handle this as it is 3 transactions not duplicates. MTN still has not done it. I gave them bank statements twice now and I am still waiting I am being told they are waiting for the owner. If this money is not being paid before the end of the week, I will make a case of theft against Mtn at the police station on Friday, this I promise.