********** debit order on my account

I am been **********ly debited on my baNK account and have no way of reaching Vodacom while I have no product , subscription or any contract with them. It started on the 1st of October 2019 with an amount below R200 and I was able to reverse but this month, they went and took R654.19 . Called the 082135 number , options are difficult to speak to an agent and prompt you to do self service which does not have options for my query. Selected an option for their contract users as I want to speak to someone , waited on the line for 19 mins , finally my call went through but nobody was speaking as If my call went on a blackhole. I am NOT a vodacom customer. I am an ex prepaid customer only but then my number was deregistered as I had not used it for 3 months which was upsetting but I have made peace with that.