R8,500 bill for a R200 P/M contract

I have had a data contract for +/-R200 per month for several years, and my 2 contracts (cellphone and data) total only about R400 per month. A little while back, we experienced some problems with our ADSL at home and resorted to using my 3G/Wi-Fi device. I assumed that, once the data had been used up, we would simply be disconnected. Instead of that, however, Vodacom allowed us to run up a bill for over R8,500, and then duly tried to present this amount as a debit order.<br> <br> Thanks guys, well done on allowing an unemployed person, with an income of about R5,000 per month, to use mobile data to the tune of R8,500 (calculated God alone knows how). Your business acumen is exceeded only by your business ethics and morality.<br> <br> The stupid codes and messages that you keep sending me to help me set up a payment plan don't work. Please could you get a human being to contact me to set up an AFFORDABLE payment plan for the arrears?<br> <br> Please could you also set the appropriate limits on your systems to ensure that, for both my contracts, the system does not allow me to exceed the prepaid amounts/limits by even 1 cent?<br> <br> Thanks for nothing.<br>