NEDBANK MYITYANI MAHOWA ZERO HELP

I HAVE UNAUTHORISED DEBITS ON MY ACCOUNT, SO I WAS ADVISED THAT THERE IS A SUBSCRIPTION ON MY CARD HENCE THE DEBITS, SO TO STOP THE DEBIT FROM GOING THROUGH I CAN BLOCK/CANCEL THE CARD. THEN I DID JUST THAT BUT THE DEBITS ARE STILL GOING THROUGH ON MY ACCOUNT, SO THE CARD NUMBER, EXPIRY DATE AND CVV ARE NOLONGER LINKED TO MY ACCOUNT WHY IS IT THAT THE DEBIT IS STILL GOING THROUGH. SO I WENT TO THE CHAT OPTION ON THE NEDBANK APP AND WAS THROUGH TO AGENT "MYITYANI MAHOWA" ASKED ABOUT WHAT I HAVE LISTED ABOVE AND HE WASNT HELPFUL HE SEEMED OCCUPIED. SO WHEN I ASKED HIM TO PUT ME THROUGH TO THE SENIOR HE RUDELY LEFT THE CHAT.