Useless people cant do anything

I have been trying to upgrade since Saturday yet with Vodacom it seems to be impossible. They say the account is in arrears on the system yet they can see the payment made already but every time we go into a store to upgrade both our contracts they say system error/in arrears. We call the call center again and they say give it 15-30 min the system will update as its an error on their side. The whole of Saturday spent in the shop having to check every 30 min and not sorted out. Go back on Sunday for another day of the same ****. Then yesterday check as i don't want to sit in the shop again the whole day and guess what still not done. Today its been over 10 call and holding for over 2 hours and still non of the useless staff can help me. You come to accept bad service in South Africa but Vodacom is taking it to a new level of being useless and pushing a client to the edge. Well done on achieving the worst client service in SA your company must be so proud.