Annoyed customer

I’m writing this with displeasure . I have been trying to get hold of edcon RMCS to help with activating my cell c SIM card for a week now, and when I call its always music playing with no answer. Even today I called x10. I was given two references and told to wait for someone at their admin to assist, but I’m still waiting. I’ve been without a phone ever since. I cannot go on like this if this how they treat their customers. I cannot go for so long without a phone for a meer sim activation like how long does activating a sim take? Is there anywhere I can complain or rather get helped at?