Usage limit not working and outrageous out of bund

We just received a bill of R7000 for out of bundle data charges!!! We originally signed a contract where a usage limit would kick in and you would need to load another bundle before you could continue using it. In the mean time the contract expired and was converted to a OPEN account without our information. We never signed for the new contract and was never informed that the usage limit would now fall away. We were therefore outraged at this and yet we were not surprised. My husband had the same problem last year and escaped from the tyranny of the big RED company. Our neighbours had the same problem. How many more have had the same issue??? Thousands on this site alone, have a look! Vodacom is doing ********* business. They think that if they sponsor the Blue Bulls this would repair their public image. I do not think it will be enough. People are fed up with #highdatacharges. I hope they understand the power of social media and how this can take away thousands of customers. Charging out of bundle rates like this when usage limits fail is against the #consumerprotectionact No company can survive if their customers get to know the truth of how they conduct ********* business