Non-existent service

I have written 2 Hello Peter reviews, sent 2 emails, spent hours on the phone and sent many feedback reports. Each time I was promised they would call back in 24-48 hours. Still no feedback. They phoned once but I answered too late. They left a message saying they would phone back in 48 hours. It has been a week and no feedback. My contract expires in June and then I will be taking my number to a different network. This is disgusting! I have 3 contracts and Vodacom makes bucket loads of money out of me every month and they can't even be bothered to phone me back!