It is important to submit as much supporting documents as you can for any dispute transaction(s) you are raising. This will help the Bank in its investigations and in ascertaining whether the dispute is authentic.
For non-fraud disputes, supporting documents are required by the card association’s dispute rules (Visa/ MasterCard) to support your claims. These documents must describe your complaint in sufficient detail to enable all parties to understand your dispute hence you are strongly encouraged to provide as much details as possible during your submission.
If sufficient supporting documents are not provided within the timeframe, this may result in a delay or rejection of your dispute request.