worst experience of my live

Being 34 years of age I have had some real bad service, but cell c has topped this by far. I have a wifi device that just stopped working with a red signal sign. I contacted cell c and then eventually spoke to a supervisor that arranged for the device to be collected. It was done and a new device was then sent to me after a few days. This device was also faulty. I have call numerous time for this device to also be replaced. And nothing is happening. Every time a call I am on the phone for no less than 20 min of which most is holding on and being transferred from one to the next. How hard can it be??? Then my call gets cut off and I have to start all over again, no matter what the agent that was dealing with will not take the initiative to call back.... Its been two months now of which I am still paying for a service that I am not receiving and I also cannot get anyone to assist me. My contact details are ***. NOTE: This is not the number that my wifi is on with cell c.