Absa vehicle finance

My name is nomalizo monica mteki .my vehicle is financed by absa ...this month they just decided to debit my account an amount that we never agreed on no one notified me of any changes when I called was told it's coz I had no insurance for my car which I had had ever since I had a car now they decided for me the amount the insurance company I dnt even know what I'm covered for this has left me very upset as I work on monthly budget like everyone else they took the money that was for other debit others now I'm not only a bad payer to other companies but also I have to pay for unpaids with the bank I'm banking with and the second in charge I spoke with miss Naidoo when I called vehicle finance department was so not helpfull