Karbonn Mobiles — Karbonn A51 - volume key problem

My mobile KARBONN A51 puchase on 15 may 2014 .volume key is broken then i will go service centre and service centre name is Aarohi services at novelty chourah in Bareilly UP . they give me 3 dayz sleep for repairing after 3 dayz i will go nd he says the mobile is not repair because vol. key is not availabe but i manage and they again say u will come tommorow i respect her i will come tomorrow but the shop is close because they close the shop on sunday its okh but i will go to monday and they again say the mobile is not repair nd again give me a 7 dayz recipt after 7 dyz i will go nd they say worker is not come unfortunetly your mobile is not repair nd he say u should come after 15 days so plzzz take an action about this prblm not facing by me but whole karbonn mobile customers facing this and take action about this Aarohi service centre for his bad service ... thnxx AKHIL BHARDWAJ Bareilly (UP) pin.243001 mob.no [protected]