Some people don't like shipping outside their home country. It's not against the rules, when you list something you have the ability to decide where you will or will not ship to. But sometimes people misunderstand the system and set options they don't mean to.
Yes but in this case the seller doesn't ship outside the country. He ships to the warehouse and then they themselves ship it off. If the seller doesn't like it he shouldn't have global shipping on his ads. We in Canada call that a 'dick move'

. I'm not sure what the issue is for the seller since they only have to ship to the GSP warehouse within the confines of their country.
And he must know by now theres GSP on his ads, Id like to see someone message him and make sure he knows and see what he says. Its an option that can be taken off ones seller account.