DISAPPOINTING VODACOM

I spent months trying to confirm cancellation of my laptop contract. The contract ended on 1 January 2026. After finally getting hold of someone, they confirmed that it has been cancelled and I will no longer owe them anything, unfortunately today I receive a statement from them saying I still owe them. Like they never cancelled it. NOW I CANNOT GET HOLD OF THEM AND ALL I WILL HAVE TO DO IS CANCEL THE DEBIT ORDER COMING OFF MY BANK ACCOUNT. WHAT AN ABSOLUTE DISGRACE, I WILL NEVER HAVE ANYTHING TO DO WITH THEM AGAIN!!!