Carrier Midea India — AC not working since installation,EC display on LCD.did not run even for a min.

Address:

East Singhbhum, Jharkhand

I purchased Carrier Novello 1.5 tonnage AC in march 2014 in Jamshedpur. AC did not work right after it was installed. Since that day I have called and followed Customer Care, local service centre as well as regional service manager. Its going to be 7 month but still no solution. I requested them to replace this AC with new AC but no use. What should I do. its 7 month and no replacement yet. I would like to get compensation too along with new AC with new warranty. what should I do very much disturbed and upset on this. Where should I go, to whom should I contact. Customer care is useless they have only one word to say whenever you call to whatever serious problem you have "your problem will be resolved, your concern has been forwarded to concerned department".Please tell me what should I do ?