Corporation Bank — Payment refund

I have done a payment using gpay on 23rd dec 2019, the amount was deducted from my account, however didnt get credited to the shopkeeper. After few days it shows as paid on 23rd dec 2019. Meanwhile since the payment wasnt completed i had to pay through card on same day i. E. 23rd dec 2019. The shopkeeper denies of receiving the payment done via gpay. Since its not refunded can you let me know where is the amount stuck?

I had dropped a mail to webcentre-bangalore but they havent got back yet.
Can you get it sorted asap?