I need my money. Account cancelled, stop debiting me

Why does Telkom bill my account even after I cancelled my contract and received confirmation of that cancellation? *** , for contract cell no ***

I keep reversing the money with my bank and telkom still continues to debit me with different reference numbers.

TELKOM, THAT’S A FORM OF *****. I’ve paid my dues, my two year contract with you is done plus I ordered a cancellation of that account 2-3 months in advance as per your stupid cancellation timeline process. What more do you want from me?

(Cancellation reference from August: ***9)

Please stop doing that!