He would have to refund the transactions. It is in Autobarn's T&C that orders not collected after 14 days will be refunded. They can't just put it back on the shelf for sale as their stock numbers on the floor will be different to their system.
https://www.velocityfrequentflyer.com/content/Earn/car-hire-service/carparking/
Under the Wilson One, it says the names must match exactly. I think it would also apply to the normal Wilson accounts but it does say up to 35 days to credit points
What would you challenge?
"The status jump start is a voluntary topbonus service offered. Thus topbonus reserves the right to change the promotion terms and conditions at any time."