Khazana Jewellery — Made payment incorrectly twice but not received the refund

On 30/09/2021 when I was making the installment payment of Rs.7000 through Google pay the transaction showed has failed so then I made the payment through phone pay which was successful and also the payment which was made through Google pay was also successfull but khazana confirmed only one transaction which was made through Google pay was successful but not received the amount from phone pay also stated that the amount is dropped. I also confirmed with my HDFC Bank which they confirmed that both the payment was successful to merchant but merchant is not agreeing the amount is received which was made through phone pay.

I have been following up on this from past 15 days but there is no proper response

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