cell c is useless

Good day, well it all started on the 6 October I've receive my upgrade phone and 2 days later I've send it back to the shop so they look at it and saw the phone wasn't working so they send it for repairs so later that they I've receive a sms which said your phone is booked in, from the following week I've phoned them maybe 40 times and al what they said to me I must speak to the repair department and they said I must speak to the follow up dep if you phone them they dont know what you talking about so a week later I said stuff dis lets cancel so I phone the cancellation departments and al what they said I must speak to the follow up department, so my point is I'm fed up with cell c, the people what work there don't know what they are doing they refused me to speak to a manager and its going now 6 weeks that I don't have a phone and they probably gonna tell me I must used this second hand phone and I received it as an upgrade <br>