1. Call to confirm: First, confirm whether the phone number you have is the official contact information, and then try to call the credit card visitor or relevant departments to ask about the arrival time or seek an explanation.

2. Consideration: It is possible that the foreign visitors encountered traffic jams, emergencies or other unforeseen circumstances, which led to the delay. You can ask if you have encountered any problems.

3. Wait or reschedule: If the foreign visitors do appear, but there is a slight delay, they can wait for a while. If you can't arrive on time or have no reasonable explanation, you can consider asking for rescheduling the foreign visit, or complain to the credit card issuer or customer service department and get further support.