Disgusting Vodacom Service

I took a new contract with Vodacom online, 3 days after the phone was delivered, the phone was not working anymore, it couldn't unlock with a fingerprint or unlock code. I then called them to report this, the lady who was helping me told me that she will contact RAM to collect and deliver a new phone within 3 days as an exchange. 5 days later the phone was not delivered. I called again and was told the system did not generate my order and that they will re-do it. Now a week later still no phone has been picked up, I haven't had this phone for even a month but they have debited my bank account twice already. Today I called them again to follow up, still they tell me the system did not generate the order, I asked them what the second debit order was for, the guy tells me it was for delivery. I never gave consent to that. I want to cancel my contract because Vodacom is disgusting, I cannot pay for a phone that is not working nor am I using. he assured me that RAM will pick up the phone next week, if they don't I am taking legal action. I am fed up with their poor service. when you miss a payment they are quick to threaten people with their lawyers yet they cannot deliver as promised. I would never recommend Vodacom to anyone.