What evidence do I need for a wrong payment claim?

For a wrong payment claim, you should gather supporting evidence like email communications, documents, billing records, or photographs. For a wrong UPI transfer, you need the UPI ID the money was sent to, the transaction ID, the date and time, the amount transferred, and a screenshot or proof of the transaction. If using a service like Paytm, you can check your transaction history for key details before raising a complaint.