Why was Giamso Tours unable to process my payment? If your credit/debit card cannot be processed, please contact your bank or financial institution to resolve the matter. Was this article helpful? Can't find what you're looking for? Inquiry Form Related articles What are my payment options? There is a pending transaction, what should I do? How can I get invoice/receipt of my payment? Are there credit card processing fees? Can I make a reservation using my own credit card on behalf of someone else who wants to travel?