AS should attempt to contact you before cancelling anything. Even banks will contact you for approval regarding a potential fraudulent charge, and in this way you can clear things up prior to having to go through something like this MP member has been forced to go through. Seriously, Alaska? I too use a VPN whilst traveling - a large enough one that I'm sure "ticket brokers" use it as well (and probably a million other people). It should never be incumbent upon the customer to have to worry - or even know about - "calling the MVP75G number" when a ticket was booked legitimately under the rules of the program. The vast majority of their customers are NOT FT-savvy and would reasonably expected to have no clue that anything other than booking the ticket normally would ever be required, particularly once it was confirmed. If it's legitimate through the terms of the program to book a mileage seat from SA to the US, then if Alaska has a problem with something they should reach out to the customer long before the flight - and certainly before cancelling it without notice hours before departure. That is unconscionable. The onus is on them in this case - particularly as their customer is clearly a long-term MP member.