******** debits

I had contract with vodacom which I cancelled mid June 2018 as it was coming to an end in July. Vodacom went ahead and debited my account on July 31st despite my cancellation. I called the vodacom customer care and I was told they have no records of the contract. I have already called vodacom more than 5 times trying to sort this out. I was told to send a "supervisor" an email on ********** " who will proceed to sort out my refund. This never happened, I have sent another email to ask about the progress to no avail. On the 31st of August vodacom debits again. I would like to understand what is vodacom's intentions regarding this. Please stay the hell away from my money and return every cent you have ****** from me. Oh and while u at it, try and get competent staff. You can be sure I will never bring my business to vodacom ever again. I have had numerous contracts with you and have never experienced this, what went wrong????