Vodacom

I'm so sick of Vodacom, I can't wait for my contract to be done with them, I complained before about them that I'm being charged so much when I changed my plan, I was told my installments won't increase so they wiped the bill for me an now I'm forced to stay on this expensive plan coz there is nothing they can do and agents still calling me to change my plan I'm sick of this I don't want to be on this plan it's a open line plan an I'm told it can't b changed when they the ones who changed it for me without me knowing what it's being changed to!! I want to be off this plan