I am trying to buy tickets for my parents who lives in Korea to visit me.

I have enough miles in my account and when I called into pay for the miles, the customer service told me that since my CC (to use for paying taxes) is not from Korea, I must show up to the airport and show them the physical card prior to flight date.

I do not live close to the airport with Korean Air office so it seemed silly to drive 6 hours round trip just to show the card to someone.

They told me that I can do "verified by Visa", but for some reason, my cards gets "general error" and does not go through.

How does one get around the CC issue?

Thanks.