Administrative failure costing me money

I have requested cancellation of 3 lines and the moving of 1 line beginning February 2015. The line has been moved, but the lines have not been cancelled as requested, and I am still being billed for them. In the requests, when asking for a reference number, it was said that the telephone number is the reference number. However, none of my previous communication has been noted on my profile, so clearly my phone number doesn't help me as a reference number. I have been on hold for a total of more than 50 minutes today to try and sort out the mess, and still no answer. What an absolutely horrible experience it is dealing with Telkom.