Cant upgrade

My account states that I am due for upgrade 29 September, which is this month. Vodacom store staff then told me I can upgrade in September even though its not the 29th yet. Vodacom Upgrades Department confirms this......so I go in to a cellucity (awesome service fro Jéan) only to then see vodacom wont allow me my upgrade?? I contact Upgrades Department again and they say there should be no issue. Back to store (also tried online) and still nothing. I was then told to call Transunion and pay R80 for a credit report???? ***?!? What has that got to do with my upgrade? Never had an problem with Vodacom from day one right up until now....how can 3 separate departments, a vodacom store and 2 salesman tell me I can upgrade then only to be told, by the same freaking upgrade department, that I cant?????!!!!?