YOU DONT GET BACK TO YOUR CLIENTS

i have asked 3 different people to help me cancel my MTN contract that expires this month on the 24th. they say that my details is sent through to the cancellation dept and that someone will call me back but they NEVER call back, when you phone in and ask them to put you through to that dept they tell you they cant. where i make my calls from it is also recorded, so i have already stated my contract must be canceled, should you deduct any money AFTER i have said i want it canceled then i will take this even further because you are not coming back to me to finalize the cancellation but thats not my poroblem. sort it out please because im sick of people saying they will call me back.