Vodacom have no idea what customer service actually means

Vodacom is extremely difficult to deal with as I had two numbers I have not used for nearly a year, and when I call to cancel the contracts, they tell me that I am a valuable customer and been with them for many years, and they have these special deals etc etc, and will not listed when I tell them I don't need those numbers anymore! What a mission to get them to cancel the contract on the expiry date and not just keep on billing me!! And I am still not sure if they have done what I requested. My one contract expires end of Sep and told that I must call at the end of Aug to cancel, so called today (admittedly the end is only on Mon), but they would not do the cancellation today, and said I must call back tomorrow or Mon, HOW PATHETIC! Definitely not customer focused whatever they may state.