Maruti Udyog Limited / Maruti Alto Lx — Denial of Company warranty and arrogance of Staff

I have decided to buy a Maruti Alto Lx for my father. He is a Doctor and I am a professional. When I approached Sai Service, Pathadippalam, Kochi for a used but new Matuti Alto Lx, they showed me 3 months old white Maruti Alto Lx. It was clocked only 5000 Kms at that time. I bought it for Rs. 2, 41, 500/- on cash payment. After giving the advance amount, they forgot to comply with all offers they made before. Now after 3 months of me purchasing the vehicle, I found its battery is weak. When I approached them, they told me that they can’t do anything. Before finalizing the price, they told me that the vehicle is covered under 2 yr. warranty of Maruti Udyog Limited. Now they just denying their words and in a way they cheated me in this deal. I have replaced the battery at my cost spending another Rs. 4200.00. When I discussed with top official there, Mr. Ashok, he also washed off his hand. Please give me solution and request MUL to take necessary steps against the Dealer who cheated a professional like me.