anyone that has Sky should try this. Call them up and say something like 'love the srvice, no problems, really don't want to get rid of it, but i simply can't afford it'. stick to your guns for a while and you should get anywhere up to 50% off immediately. It has worked for me and a few other friends.
Also, one friend owed them about £400. They obviously cut him off. A few months later they came to him and said if you rejoin we will drop your debt to £200.He said no.
They then said they would completely wipe his debt. He said no.
Then it was wiped debt and half price for first 6 months. He said no.
Then it was wiped debt, first 3 months free, and half price for next 3. He said no.
Then it was wiped debt, 3 months free, 3 months half price, and a free Sky+ box. He said yes.