Wesbank service is not helping

Account has been settled and settlement amount was paid on the 19th of June. Come 25th of June and debit order was deducted. Called FNB to reverse it and sorry not able to do it as Wesbank has blocked it. I was in Wesbank website and requested a refund, ref 859464. Imagine a surprise when I get an email response form ***, saying they can't find any account details??? I tried calling their account contact no *** and keep getting "The number you have dialed does not exits" So management of Wesbank - who do I call or speak to to ge this resolved? And I am here hoping that someone, and not a robot or automated response, but an actual person will call to help me today still.