Reebok India — lower with length and make defect

i purchased a RBK lower on dated 09/10/09 bill no.- 2870 ,of Rs 1299 from RBK MATCH PIONT, 48 chakrata road, dehradun(u.k). next day i noticed that the lenght and size of lower is not same and when i measured the lenght and width of the lower there was a difference of 2 inches in both sides. One half of the lower was of 40 inches of lenght and the other was of 42. When i went to the shop next day on dated 10/10/09 they told me that after 15 to 20 days there district examiner will come and will check whether it can be changed or not ,they said it is the procedure of the company even in the case of manufaturing defects. Now i want to know that if a person is buying a branded stuff with blind faith , is that fair that a customer has to suffer due to there manufacturing mistakes and how can a product of such a big company comes to the market with such big defect with two legs of one lower with different sizes and the company is not ready to admit there fault and the showroom executive started telling me the companies rules and said that if i want easier solution they will alter this lower or i have to wait for next 15 to 20 days for there executives visit for the varification of the defect and the customer has to suffer due to there mistakes.