[Resolved]  Flipkart — complain about ordering a mi a1 phone

I ordered a mi a1 phone from flipkart which was on sale on exchange offer... They checked my device online and they guaranteed me a discount of rs 3500 on exchange of my device... It surprised me when the courier boy said the device cant be exchanged as it is damaged... When i asked him what is damaged in my device his reply was like..."your colour is gone and at such we take it for a damage"... Yeah i didnt argue with him further... But my grievance is that flipkart should not dupe people showing exchange offer if they really cant give us the offer... Also it was not mentioned anywhere about the terms and conditions of exchange... Flipkart should rather highlight their terms of exchage before advertising such false exchange offers!