Uber India — Refund not received fully non-cash payment

I have booked Uber to drop my guest from my home to railway station. I selected Paytm as payment mode. But when they were dropped in railway station, driver asked to pay by cash. My guest paid the amount in cash. At the same time trip amount is deducted from my PayTM account as well. I contacted Uber, they returned only 90% of the amount.

Trip Date: September 10, 2021
Total ₹336.76
Refund amount : 300 as Uber credits.
Balance amount to refund : 36.76
No response from Uber for the balance. Support response "We already refunded 300 Uber credits and can not do anything on this", which is not acceptable.
I want the balance amount should be returned back to me.
Thanks,
Kannan