Bad or no service vodacom cancelation number

For months I am trying to cancel a number from vodacom and every month they promise to cancel my contract on ***. And every next month the amount of R79 were deducted on my account?

Vodacom is not there to assist but to see how much money they can get elegaly from customers.

They does not care.....

Vodacom must cancel this number from date it the contract ended.

Every month the excuse qere.. sorry Sir we have two different systems and every month they promise the will cancel the number and pay me back from the end of the contract period. There is no use if vodacom have a cancelation number but they don't actually cancel the contract?????