If you don't know your Clickbank receipt number, please check your emails. Make sure to check your spam/junk folder. Clickbank always send you an email receipt for every purchase.
For billing related questions or a charge that you see on your bank statement, you can contact ClickBank's Customer Support team on this page
or call them at 1-800-390-6035 from the US or 1-208-345-4245 from other countries.
If you have any concerns or need help on anything else, email us directly at email@example.com