Horrible website, bad service

Trying to upgrade a contract for more than a week but their online path does not work. Their website keeps giving an error about it not being able to retrieve the required data and to try again later, or it bombs out. Eventually was able to successfully process the upgrade only for Vodacom to cancel the upgrade with no communication as to why. Tried to then upgrade through the call centre but the only upgrade they can offer me is a VERY expensive contract that doesn't meet most of my requirements.