Standard Bank ******* debits

I have had vehicle finance with Standard Bank since 2019. From the outset, Standard Bank have debited me for my finance only. Recently, Hollard as well as Standard Bank have been hounding me to add an additonal amount onto my debit order for insurance. I have corresponded with them via email and have unequivocally stated that i did not authorise them to do so as i have my own comprehensive insurance which i provided proof of. This month they went ahead with the debit order including an additional R817.83. This is absurd and quite frankly ******* and i will be consulting my attorney as im quite sure this is against the POPI Act. This comes after being hounded by 3rd party insurance companies (Hollard) who have relayed this information back to Standard Bank. Should i not receive a full refund immediately together with refunding fees incurred due to this ******* debit i will be left with no choice but to refer this matter to the ombudsman and take legal action. Also, the debit order has also been adjusted from the 28th to the 26th resulting in a failed debit as my salary was not yet reflected. This has also impacted my credit score.