VODACOM still debiting my account __ HORROR - After 2 months of contract being cancelled

I have 3 contracts with VODACOM, I notified VODACOM in March 2019 that I am cancelling one of the contracts because my son is working in Europe. They said everything is fine and my last debit order for the cancelled contract will be 15 April 2019. Then came May i notice that Vodacom debited my order again. So I phone Vodacom and they said i will get a refund. Nothing happened my wife went to the Vocacom shop to query this and they told me the last debit order will now be the 15 June 2019. So 2 things will happens her, either vodacom is going to refund me the 2 extra months of debits or they will lose my all my accounts as they expire this year and 1 business account. I am horrified that Vodacom a listed JSE company can conduct business like this. I am ready to switch over to MTN. I have not time for this. John de Ponte ********** 499