The worst service ever!

I am on a vodacom contract for many years now. The service I have received the last couple of months is so appalling I would rather sit without a phone. I have a smart phone and regularly I have to update the phone and apps. With this I sometimes run out of data. The last couple of weeks I try to load data on my phone and I receive no data but it gets added on my bill. When I try to phone customer care I wait for twenty minutes to get an answer and when I do I either get disconnected or the person tells me to hold on and after another ten minutes they cut me off. Does vodacom employ *********** people or are they just lazy.