complain about Vodacom

i just ha very bad experience. In July i phoned to cancel and account no longer in use, a tablet that is lost. On the next statement the amount still debited, so i went to Vodacom Cresta a d a consultant called Neo helped by phoning the cancellation department. She had references and they told her that i would cancelled by the end of the day. This month the amount is still on the statement, I went back to Cresta and the consultant phone hem again and after 2hours they said again that it will be done today. I am a pensioner and the amount is R405 is the kind of money i cannot afford specially for something that i don't have anymore but they refused to refund the money for this month. I say thank you to Neo who did her best to help me but the the rest (cancellation department) i call that a VERY bad service and this is the last contract i will have with Vodacom