Boat — Defective Product received and Reject refund

Address:

H.No. 29, PRANEETH PRANAV VALLEY

I brought Avante Bar 3100D from boAt Order Date 15th April 2021, Product delivered on 22nd April 2021 and raised request for return on 23rd April 2021 (mentioned as defective product - as HDMI port was not working), BoAt team reject the refund on 27th April without mentioning any reasons, on the same day called customer care but there was no explanation.
After that called several time still no resolution.

Thought wasted INR 12, 000 but still no using so raised issue under warrenty but that also no response, no one attended.