Boat — Replacement not done of product under warranty

My earphone model Rockerz 335(boat) got damaged and deposited at service center on[protected]. But the same is not replaced till date. I have got the mail that the product is out of stock and they seek permission for the delivery of other similar product. I agreed. But, they again repeat the same on[protected]. But, its still not initiated the delivery process of the inferior product in stead of my original Rockerz 335. They want to deliver rockerz 330 which has standby time 30 hours whicle the Rockerz 335 has 150 Hours. So much of discrepancies. But, I want the product ASAP, as its more than 1 month. So, disgusting.