AIG UNAUTHORIZED DEBITS

AIG has a tendency of taking unathorised debit orders. After I had my car written off, they continued taking inusrance premiums for close to two or three months and I had to reverse it all the time.

Now 8 months after my car being written off and not having any form of insurance with them, they debited R26 540.18 from my account, and immediately returned it. This resulted in the bank charging me R100 because other debits couldn't go through. I sent them an email on the 29th November 2018, and did not even receive an acknowledgement of email.

I want to know what recourse i have because my credit score has obviously been affected, and I also want the refund related to that transaction.