payment of 3000 rs even within the gurantee period of the product

Location/place: ranchi

Name of company/service: NOKIA

it is with reference to my nokia handset c6. I bought dis fone on 30july2011,just aftr a few weeks i came across ka problm in non working of touch screen. I got it repaired free of cost. The next prob i suffrd was that the buttons of my fone went lost. N the fone was still in the warranty perion when i contacted the nokia service centre on 25 july 2012. They checked the fone n said although its in a warranty perion entire processings inside the fone has to be changed.. And the they 3000 , within the warranty perion just to replace a button.n now again i am facing serious problems in this fone. But culdnt go to the centre orelse without ne reason theey would charge me.