Amazon India — Not yet refunded the amount of wrong product

Website:

amazon.in

I had ordered for a slimming belt from amazon, instead they gave me a sports bra. I raised replacement but they sent the same wrong piece again. I finally opted for refund on 21st May, received a message that refund will be initiated, but I have not received any update on it yet. Very displeased with Amazon's service, how can they send the same wrong piece twice. I need my money back.