Application for additional contract/no service

I contacted VODACOM to get additional contract i was told it was approved but they are waiting for a code to change price (to honour special price). Jacqui and Dorah promised to phone me back Friday 20/3/2015.<br> i have tried to contract the call centre to no avail. Up to date still no feedback or telephone call after i have sent numerous email requestes to both ladies. the other one is Dorah Molopyane.<br> What do i have to do to get service from them and at least a curtesy call to update me on what is happening.<br>