customer service **** about my contract!

I had 2 contracts with Vodacom. When a lady from Vodacom called and offered me another one, she said it was a 10gig anytime data contract. I specifically repeated and asked her twice to make sure it was a 10gig anytime package which she confirmed. Track to a week later when I received my Wi-Fi router. I set everything up and found out this is a 5gig day time and 5gig night time contract which I did not sign up for. I called Vodacom to cancel. I asked the lady if I'd be charged the R 170 for the contract I was cancelling, she confirmed that I would not be charged. No apology was given for the previous lady who **** about what I was getting. The end of the month came and I was charged for my new contract which I had cancelled already. The Wi-Fi router had also been sent back. I phoned again, the lady said the cancellation was sent in late and I'll be refunded at the end of the month. Ofcourse that was another lie, because when I called this morning, the very nice lady explained that the contract wasnt cancelled and is still showing as active. She was the only lady that also ever sent me a reference number for this situation. She told me it'll take about 7 days for them to help. However, if that is 7 business days, the contract that I cancelled and sent back weeks ago will go off again the end of this month. I'm honestly so sick of waiting and being **** to over and over that I don't want to wait these 7 days. I want the previous bill to be refunded and I do not want to be billed again for it the end of this month.