Worse service and *********** staff

Capitec is the worse bank ever for one month I couldn't pay my full installment and I paid 60% of the installment and they phoned me for the short payment I made an arrangement to pay an extra money since I always not even sure if I would have money in May 2022 but fortunately an amount was deposited in my account without asking if they can take 2 installments they went ahead without my permission which then made me to be in advance with the R1500 I paid before they took double installment and in June 2022 I couldn't pay because I was struggling they kept on phoning telling me that I am in arrears and of R1273.00 and I said yes because I had borrowed to meet the arrangement as discussed with one of your agents but you collected 2x installments and right now there's no money. Yes I was aware that I am in arrears of R1273 how the hell did that changed to the full installment does that mean my R1500 has disappeared because someone phoned and said they will log a query with the accounts department instead the same collections department phones me when they cannot help with clarity on this or see beyond 3 months of the statement Stop calling me until you can tell me what happened to my R1500