Handed to debt collectors for the problem created by the bank

Yesterday I have received an email from the (Thobeka Myeza) Debt collectors Indicating that my bond with Standard Bank has been handed over to Debt-IN for non payment. I wrote three reviews about standard bank failing to debit my account on the initial arranged date, where they failed to do so. My agreement with standard bank is to debit my account on the 26th of each month but recently they are no longer debiting on the said agreed date. I have done numerous follow up with the bank asking them for failing to debit my account, where I was promised it will be done the following day but still failed to do so. I am concern that Standard Bank failed to debit my account as agreed but only debited my account yesterday and still referred my account to debit collectors meanwhile the bank is the one who failed to debit my account on time citing technical problems.