Failed Voluntary Call Limit Costs Customer

I recently upgraded my line to the VIP line with a subscription of R1999. I have a long standing voluntary call limit (VCL) of R1000 on my line. This means that when my utilization reaches R1000 above the subscription amount my line locks. I was shocked this month to receive a bill of R4,500 - R1,500 in excess of what my VCL should allow. Further more, I did not receive warning the usual utilisation messages that are issued at 50%, 90% and 100% utilisation.<br> <br> Upon calling the call centre and explaining the mechanics of their own service to them I was met with a flurry excuses which did not add up. After four iterations of the same explanation the consultant gave in to say \the best I can do now is escalate". <br> <br> I instituted the VCL to protect myself yet the mechanism has failed. How many other failures must/ am I paying for unwittingly.<br> <br> The difference between the cumulative limit (R3"