Vodacom ripped me off at R1000 per gig

When my monthly data of 5gig had run out in December I continued to be billed out of bundle rate. Vodacom did not inform me via SMS or otherwise so I unknowingly continued to be charged without my knowledge.<br> So I had gone over and above my contract amount by 10gig.<br> I was then unfairly charged R1000 per gig in total of R10000!!!!!!<br> I find this totally unacceptable and unfair for someone to have to pay this amount of money for data. So I call customer care and spoke to a lady called Zandile she says it's in my contract that I signed. Basically when we take out a cellphone contract, those 50 paged we sign, basically we sign our death warrant? <br> Are my rights as a consumer being violated ? <br> <br>