*****ing my Money and Ripping me Off

I have been following up on the mess African Bank has made on my account Since December 2021. i have made numerous calls, been to the branch, I keep getting new reference numbers and when I follow up they advise me it is being escalated. They also advise that my complaint will be resolved in 7 days. 3 months later still nothing. Firstly they stuffed up on my insurance claim for short time and under paid. My account then went into arrears and i was charged interested for my account being in arrears, They finally fixed the insurance claim, but did nit reverse the interest charged on the arrears (which is not my fault). Then a debit order went of on my account, after my loan was meant to be settled, but due to the insurance fault, it showed I still owed. I want the money back that was *******ly debited as my contract had ended and the interest that was incorrectly charged on my account. I have also asked for a breakdown of which months insurance paid and what months I have paid. Conveniently you are avoiding sending me this breakdown, which i am entitled to. I also questioned the interest being charged on my loan which is suppose to be 27% if i am not mistaken, but my total loan repayment is more than double of what i have loaned. (So if i loan R500, i have to pay back R1500) Please explain that to me. Not even a loan shark charges that much.