Terrible Service

I canceled my upgrade with Cell C Direct via email, I then received an email stating that I will receive a call within 48 hours. I am still waiting for this call, more than a week later. I now sit with a situation, where I can not do my upgrade at a Cell C store due to the incompetency of the Cell C Direct team and departments. I have had to contact them to try and get this resolved, but I just get passed from one department to the next and nothing gets done about this problem. I will never recommend Cell C to any one that I know, no matter how good the deals. Which they always advertise, but never have stock either