Data charges too costly!!

I don't know what's happening with Vodacom lately. I've been their client for over 10 years now. But things are getting put of hand. I had loaded 1G of data about 3 days ago but now it's already finished and I hardly go onto social media these days cause of the fact that their data is too expensive. I am really considering changing to another network at this stage. If it's not the data it's the airtime. Just can't afford to have such a pricey and expensive network anymore. Very much disappointed