Incorrect phone/spec supp**** on Upgrade

My Wife and i went to cell c president hyper Friday the 5th Feb 2016 to do upgrade and we were looking for a dual sim phone. Well the Sony m5 is a *** phone at the moment and they didn't have Samsung J7 yet and their Huawei g7 is a single sim while on the system states dual sim (incorrect data I guess). We left our details but on our way home we decided to contract Cell C direct for Huawei g7 dual sim phone. The consultant did confirm that they do have a dual sim g7, well according to the system as usual. Upgrade was concluded and Monday the 8th she received the phone, we opened the phone and found that it's not dual but single sim phone. With her busy schedule she tried calling cell c direct but she has been taken to pillar to post and no one is assisting her. We want this to be sorted as soon as possible its either you give us a Huawei g7 dual sim or u cancel the upgrade.