Vodacom is a *****.

I have settled my account with Vodacom on my contract phone and send them a cancellation email. They still deduct on my bank account.i received an invoice with a double bill they moved me to prepaid after I have explained to them that I want nothing to do with them anymore. Further more the head office is so useless the call centre people will transfer your call from one person to another while westing your time and afford. They drop calls and when you ask to speak with the supervisor she refuses to speak with me.vodacom is a ***** even now no feedback received from them after sending alot of emails.how can you deduct money from my account and fail to see payments. How can I resolve this matter.😭