Cashfree is a payment gateway that helps merchants accept online payments. If you are seeing Cashfree name mentioned on a statement, it would be related to a payment made to a merchant using Cashfree.
In case of a successful payment you would have got a payment confirmation email that would show the transaction details as well as merchant details. You can use the merchant details and contact the merchant for any transaction related clarification.
If the merchant is unable to resolve your issue you can report here. For fastest resolution we recommend that you provide the payment date, Order ID and UTR
What is UTR and where will I find it?