Dr Batra's — Not getting refund

Hi
I paid ₹16, 000 for my sister's hair treatment at dr.batra's but then her problem was still there so i took a second opinion, according to senior doctor at apollo hospital with over 35 years of experience was confident that their diagnosis was not accurate, then we took their treatment which helped my sister recover but as we took no treatment from dr.batra's i would like my money back where it belongs. It will be really appreciated, it's the right thing to do afterall. That's my hard earned money which i would like to put it in use.

Thank you