Tata Sky — subscribed channels not showing up

Address:	New Delhi, Delhi
Website:	www.tatasky.com/wps/portal

For the last 2-3 days .. Many channels are not showing the programmes but displaying the message that I need to call on some specific no. displayed on the channel to activate the channel. If I have paid for the subscription of these channels, how can you remove them from my set top box. Who gave you the right to do so ? Without my permission .. how could you do that ? I want full refund of my amount. Pathetic services of Tata Sky. I want my money back and wish to discontinue with your miserable services.