No service after signing for a contract.

I regret signing up for a 2 year contract where I would get a new Explora Ultra and a new installation.The Expora arrived by courier,and I had an appointment where the installer would come the next week.I am still waiting for the installation.It is now 3 weeks later.I tried to activate the Explora,but it is not possible to do it yourself.It must be done by the installer.I don't know what more to do,because the case keeps being escalated,but nothing happens further.I have been billed already,but I still have no service.What a pathetic lot you deal with at Multichoice.Shame on you!