Not happy with contract offer

Good day,

I called in to cancel my contract and I was offered an airtime package and was told it will start on the 1st Aug, later decided I dnt want airtime package I would rather have data contract, when I called on the 9th July, I was told they can’t help me the lead who did the deal has to call me back and change that for me, knowing Vodacom Prudence will not call me and I will end up with a package m unhappy with, trying to speak to someone is a mission on its own cause u have to hold for like 30mins, but please can someone call me back regarding this????? Before this ends badly