Micromax — MICROMAX CANVAS A-300

I purchased a Canvas A-300 from flipkart at very initial high prices in july2014, phone was working good upto may 2015, in June 2015 problem of hanging of phone start arises and phone sometimes even did'nt switch on, i visited the Micromax care at PERFECT SOLUTION KALKA JI, NEW DELHI., after looking the phone they said that the Battery is required to be changed and it is chargeable, i said OK and given them Rs. 2250/- for battery, however the same problem of not switching start on the very next day itself, i again visited the M/S PERFECT SOLUTIONS, this time they said that they will re- installed the software again and the phone will be OK. The phone hardly worked for barely 24 hours and again the same problem of not switching on arises. Once again i visited the PERFECT SOLUTION and they said that the phone is dead and mother board and all other parts are required to be changed and even phone can be replaced by the company and it will take 25-30 days. my question to them was then why they changed the battery and charged me Rs. 2250/- ( though the battery was working fine). I REQUEST TO MICROMAX AUTHORITY TO KINDLY LOOK IN TO THE MATTER AND PLS LET ME KNOW WHETHER I WILL BE ABLE TO GET MY PHONE BACK IN TIME AS I HAVE TO ARRANGED FOR SOME OTHER PHONE IN BETWEEN. AND ALSO THE BATTERY MONEY THEY CHARGED WITHOUT ANY REASONS. PLS TAKE SOME ACTION AND ALLOW US TO HAVE FAITH IN MICROMAX.