Razorpay — Upi merchant transaction

Had done a merchant transaction of rupees 30000. Through phonepe (paytm payments bank). Transaction successful but merchant says. They have not received any payment. After that I contact to the payment getway razorpay. After 1 month they says contact to your bank an file a chargeback against this transaction. Then I contact to paytm payments bank. They says we have received confirmation from merchants bank Icici bank that the required service has been delivered to me. But I have not received any service for that transaction. But after some time we realize that the merchant was a scammer. The name of the merchant application was theshoppers. And merchant name on getway was Shree Ganesh traders. And now paytm say contact npci and file a complaint against this transaction.
Kindly help me to retrieve my amount back..
Upi reference no.[protected]
Transaction date 13/01/21
Transaction amount INR 30000.
Issuing bank name paytm payments bank
P2P application name phonepe