Impossible to upgrade

I’ve tried upgrading with Vodacom for six weeks now and it’s physically impossible and no one can tell me what the problem is and none comes back to me with a tangible solution.

I’ve been in store, I’ve tried online, I’ve spoken to five upgrading consultants. Many of whom just seemed annoyed to deal with me. I’ve even written a complaint to customer care on this and all that happened was a transfer to upgrades where customer care told upgrades that I “couldn’t do it online”.

I actually can’t deal with this company anymore. It’s taken up hours of my time and I’m still stuck.