Looks like you were bothered. Why? That might help figuring out the appropriate reaction.
Feels like you felt personally attacked for being the one they chose to cut in front to. If that’s the case, a clear “hey, please find somewhere else in the line to cut in front to” might be enough to get them to at least swap places with you. It acknowledges them, is polite, but firm.
Looks like you were bothered. Why? That might help figuring out the appropriate reaction.
Feels like you felt personally attacked for being the one they chose to cut in front to. If that’s the case, a clear “hey, please find somewhere else in the line to cut in front to” might be enough to get them to at least swap places with you. It acknowledges them, is polite, but firm.