Billed more

Mtn has just been a nightmare to deal with lately. Anyway my complaint is about the statement they currently sent me. It has a 500MB data bundle that I never bought, and instead of insurance being charged at R110 as they told me, it charged way more than that. When I get my MTN anytime bundle, I don't get the data that I'm supposed to get with it and I have to purchase data on top of that. When I load airtime on my phone so I can call outside the country. As soon as I make one fall call, my airtime balance goes right back to zero. I don't know whats happening to my airtime. When I try to call the call center, getting through is next to impossible. Their strike is not our problem, the problems are just too much!!