Boat — Warranty claim justified replacement product not issued.

I have registered a complaint of my boat bassheads 100 black headphone, it's one side wasn't working. My ticket no. Is 1328647. They picked my headphone on 26th of july. Seller has received my product on 1st of august. They have checked my product properly and they issued a replacement of my product on 5th of august. Since 5th of august till today my replacement product is not dispatched. I have called them to ask, they said they ran out of this particular colour headphones, they suggested to take different colour i agreed, my product still not dispatched.