Balance incorrect after payment

So I made a payment on my account for an amount for R615 on the 27th of May 2026 around 14:20, the payment updated immediately as my balance on the account went down and the amount I was able to purchase for increased. This was literally yesterday, today when I check my account it shows I am in a minus basically redlecting that the payment was not made or received on their side. I then decided to call customer service and was advised the payment would only reflect within 3 - 5 days. This is utter BS as in the past, just last month, my payments online always reflected immediately. I am so sick and tired of poor customer service and having problems with accounts. Can I please get help on this matter asap!!!!!?????