Disappointed Wesbank client

This morning, 26/04/2022, my bank account was debited by WesBank after settling the full balance amount on the 20/04/2022. I don't know why my bank account was debited this morning if there is a zero balance or owe Wesbank no money. When contacting and emailing Wesbank proof of payment, still no response from Wesbank. Do I really have to fight for my own money and is this the type of service us South African's have to deal with being a Wesbank client and entrusting our monies and transactions with WesBank.