Cancellation Hassle

Wrote to cancel data number in September. Called last Friday to cancel. Told me I will receive sms. Did not in two weeks. Today I received email to say account will go on a month to month. I called and the lady says it was not done two weeks ago but only yesterday. She says they don’t look at cancellations emails. And she can’t send sms to confirm cancellation. What is Vodacom doing to customers.