Allowing ********** transactions to go through even after reporting

On the 22 May 2020. I notify the bank that these a particular company that’s debiting my account randomly. When I call the company thay can’t explain what the debits are for. I asked FNB to block them from having access to my account. I have even cancelled my old card and got a new one thinking this would help. I was told to fill a dispute form and while they investigate this company won’t be able to debit my account. This was a lie as they are still debiting my account randomly for thousands. Now they say they can’t stop the debits from going through and I keep getting called my collection to fix the negative balance but how when the negative balance is cause by the very same people I have been begging the bank to help me block. I have zero control of my account and FNB refuses to help. I have never been so frustrated by a bank ever and ever channel I go through can’t help. In the interim this particular company is debited freely from a cancelled card even after I begged for months for FNB to help