Call centre - One says yes other say no other says they dont know

I phoned the call centre yesterday 16 januarie 2018, spoke to a lady, who told me she fixed the system for my premature upgrade, i can go to any store to do the upgrade... So i drove all of 60km to Vodashop in Galleria mall in Amanzimtoti to do it, only to hear in store they cant see any changes on the update date, so they cant help me. So i phoned the call centre again, spoke to a rude guy who told me a premature upgrade is not possible. A while later i phoned again, spoke to Cheslin Solomons, he said it is possible but his superior must overwrite the system for him to assist me further, so he will do it and phone me back. But upto now i did not receive any phonecall... I lost my phone so i really need to do this upgrade, it is only 14days premature!!!