[Resolved]  Reebok India — did not replace instead of manufacturing defect

I bought a pair of Reebok floaters(invoice no- B7-2752) for Rs 1600 on 5th Sep 09 from the outlet at manisquare,Kolkata.The side padding on this model is extremely uncomfortable.I had noticed this while trying at the outlet.But the salesman told me to use it and see,if still a problem,they will be happy to replace.But right after one use,i found that the side padding comes just below the ankle which makes it bleed.It was not the normal shoebite of a new shoe but a problem that would persist because of its design defect.When i went to the store for replacement, they behaved very rudely and denied replacement even after it was only after a week.
Please suggest what can be done.