Vodacom is on a serious day light *******

I've recharged with 1 Gb on the 26 February later that day and by the 1st of March I received a massage that my data's where 4,5 to my surprise on weekend I was way too busy to be on my phone, and even if I was I wonder what could be so expensive? Not even their consultant had a better explanation but to tell me I've being using Internet... Like really what else would I buy data's for???The only explanation to me could only be this power hour thing clearly they can't afford it anymore and they decided to benefit more on us , this vodacom is a ponzi scham that's it...