Misleading salesman

I recently called in to Vodacom to change my contract to prepaid. Spoke to a gentlemen who convinced me to stay on contract, promising a great deal. 5gb of data for R79 and 100 anytime minutes for R55. This was a deal I could not pass up so I signed on. The guy kept on telling me that they had a system issue so will call me when everything was sorted. No phone call came. On the 30th of September I called Vodacom to confirm. Apparently the 5gb was loaded but not the minutes. I spoke to Mihlali who didn't want to disclose her surname, who said this matter will be escalated and a manager will go through the telephone call to confirm what I was promised, then get back to me within 48 hours. I still have not received a call. My wife uses the contract and has not been able to make calls to her clients as she currently runs her own business. I did not want to have to complain on this platform but the thought of waiting an hour to get hold of someone when I call frustrated me as this is how long I waited when I called on the 30th of September.