Vodacom - The ****!

I'm tired of being ****med by Vodacom! I bought 240 min for R100 which are apparently "on special". Anyways, my account is loaded with 4 minutes! I speak to a rude consultant who tells me its a pro rata and that the minutes are "recurring". Whatever that means! I'm not foolish, i was supposed to get at least 28 minutes if they were really pro rated! This wouldn't be the first time I don't get something I paid for. I should find a new network to move to because there is no way I can tolerate this for much longer! Nothing is really as it seems, no transparency, taking money from customers and not providing the requested services. Sounds like ****mers to me!