Data account sky rocketed - no feedback

Good day MTN, <br> <br> I have cell phone and internet (****le) with MTN. My internet account is for 1G = R75 pm. During April, May and June this account sky rocketed to R6000!!! Nothing changed on our side and I can't even see it possible for me to use that amount of data. I definitely did not get anything extra for this. To make matters worse is that during this time I could not monitor my usage on my computer. After this I upgraded to a top-up contract and suddenly I could monitor data usage again. <br> <br> I've heard of other people with the same type of issue with MTN. I went to my local MTN store and a complaint was logged in May. NO feedback yet. I find this unacceptable! <br> <br> This amount of money is a huge set back with nothing in return! As no one could explain this I see this as theft and I would love to hear how this is possible. Please MTN get back to me. I need a refund.<br> <br> Thank you.