Cantabil — Denied exchange of products

Address:

B-16,LAWRENCE ROAD INDL. AREA, DELHI-110035

I bought 3 shirts and 2 trousers with Invoice No MR[protected] but when i asked for 2 shirts in return of 2 trousers storekeeper denied citing it as company policy but behind their invoice it is mentioned that goods can be exchanged within 7 days and i approached within 7 days for exchange.