Cell C *****ing money through debit orders

BEWARE OF CELL C.... They submit debit orders to bank years after a contract was cancelled in an attempt to ***** money! I had a Cell C cellphone contract many years ago which I cancelled somewhere in the year 2018 or 2019. Ever since I cancelled the contract, Cell C attempt to ***** money from my Standard Bank account every year by submitting a debit order to which I am alerted by my banking app. I then have to sign in to my online banking with Standard Bank and request that they reverse the debit order and Standard bank obviously charge me a fee to reverse the debit order. I will now have to move to another bank because this just continues year on year. So everyone who ever had a Cell C contract which you cancelled, had better keep an eye on your bank account where the debit order was because if they keep trying to ***** from me then they are more than likely doing it to others as well.