A clean one-page chronology is more useful than sending ten screenshots without context. Write the card’s last four digits, payment amount, bill due date, payment channel, debit timestamp, transaction reference, and the time you first reported the problem. Attach the bank debit proof and the card-account screen showing that the payment is missing.
- Bank statement or transaction receipt showing the debit—not just an SMS.
- The payment reference, UTR or gateway transaction ID exactly as displayed.
- The card statement or recent-transactions screen showing whether the payment posted.
- Complaint or service-request numbers from both the payment channel and issuer.
- Any protective second-payment proof, clearly labelled so it is not mistaken for the original transaction.