Charged 100 euros in 10 minutes, how is this possible?

Hello,

I am writing to ask for some assistance regarding an issue I have encountered with my internet consumption, as many seem to have also experienced… Apparently I exceed my internet bundle, my number has been blocked and now Simyo is charging me 100 euros for internet fees outside of the bundle I choose to pay. As a student, I think is very upsetting to choose a plan that costs cheaper (10 euros a month) and be faced with a bill that costs almost my yearly bill of internet and telephone usage. Moreover, the 100 euros charge has occurred in only 10 minutes of out of the bundle internet (from 19:16 to 19:26). My phone was on Do Not Disturb when I got at the same minute the SMS from Simyo saying I had got to 80% of my bundle and that the internet was over (I have a screenshot), which I also find a bit strange.

These fee really put me in a very difficult financial position. I literally downgraded my bundle 3 days ago because of my financial situation, and I was using the Wi-Fi, so I really don’t know what happened. If someone can please assist me I would very much appreciate it.

Thanks!