Revolting service

I have an issue with your picknpay branch protea glen boulevard. My dad who is an elderly pensioner went to go pay a dstv account and the cashier made a payment into an incorrect account, he went back to make a query regarding the matter as he immediately saw the issue. In the store nobody wants to take accountability of the error made by the cashier. They above that made the pensioner wait without any consultation for over 30min until i had arrived at the store. Spoke to customer service consultant who is Thabisile Ndlovu who was also of no assistance as she states that the elderly customer was paying sabc account at which the elderly customer did state he is paying a dstv account. I had informed them that I understand they wont refund the amount and pay it into the correct account, i demanded they take action against the cashiers incompetence we received from the store since they do not want to take accountability. The cashiers name is Zumile Mbambo who was removed from the till to not interact with us, as there was also no apology that we received from the people who interacted with us. I do not know whether you teach your staff about treating customers fairly, as the way the matter was handled was really revolting. They would just leave us standing and not informing us as to what is they are doing regarding the query. The frontline supervisor did not even come to our aid it was as if we just there to pester them on an error that was made by them.