Unprofessional Service

I done a premature upgrade on my phone and was told about the increase in prices. However I was not told about the extra year I will have to wait before a new upgrade. About 8 months later I done another premature upgrade on another phone and once again told about the extra payments but not the additional year. How poor is it on vodacoms part not to clarify information to clients. We were new at doing a premature upgrade. In fact we didn't know of a premature upgrade until Vodacom told us we can do that. So how can Vodacom not clarify the conditions for the upgrade! Had I known I would have bought out my phone and not upgraded! Unprofessional and *********! I only found out about the extra year now on enquiry. Vodacom did not disclose conditions both times. And to my shock I emailed Vodacom about this complaint a week or two ago and still have gotten no response. Absolutely ridiculous and very very poor service!!