Aircel — Change of Plan without being asked to do so

I have been using the Aircel student plan, which gives me 150 free messages every day and also calls between aircel studen plan nos. fr 25p per min and local calls at 50p per min..
Then after introduction of the 1p plan, Aircel without any information or prior intimation switched me over to the 1p per sec plan and increasing my call rates and also making me lose my message pack, after several complaints they agreed to switch it bak but after waiting for months today the customer care inform me that my request is not possible!
How can they even claim that my request is wrong when they have illegally switched my plan and made it impossible for me to use my Cellphone to its full extent due to increased rates especially the messages

My friends suggest i take them to the Consumer court and file charges against them. What would you say i do??