Pathetic Service

I have a personal loan with Standard Bank that I pay via debit order and have not missed one payment. In March 2025 I requested that my debit order date be changed from the 26th to 29th of every month. My debit order for 26th March was deducted then on the 29th March another instalment for the same month was deducted. I then requested a refund as they double debited me. The refund was paid sometime in April 2025. I then got a call from collections to advise I am in arrears as I never paid my March debit order. I then told them to check their records properly as it was paid twice and I am waiting on my refund. I was then advised that I was not in arrears and that it's a technical error on their side. On the 23rd June I got a call from some collections company to say SBSA handed me over for collections. I again explained what happened and again I was told that it will be logged that it's a technical error and SBSA must remove it. Today the 27th June I check my credit report and I was listed by SBSA to have missed a payment in May'25 which is incorrect as the debit order has come off. I am not sure what the heck they doing with my account but they are messing up my credit record. The amount that they emailed me is not even the same as what I am supposed to be paying. Below is what they sent me as a reminder, however my instalment is a different amount monthly. Bill for Std Bank Total: R2537.31, due Jun 29