Appeal/Missed call

[treydawgmt]

I have a situation that I'm wondering if my partner and I handled correctly. 18+ league where the players player/manager swear they play "strictly OBR," but then have 10 guys bat, and allow courtesy runners, so maybe a few variations.

Batter hits a ball that I see hit off his foot and go up the 3rd base line a few feet. PU does not call a foul, catcher throws to 1B, BR called out. This whole time the batter keeps yelling it was off his foot. I guess my partner said, "I'm sorry, I didn't see it." The batter asks a few times to get help, my partner then asks me for help. I tell him it was off his foot, becomes a foul ball.

Now the defense is upset, claims the call can not be changed because the BR was already called out, no way to change that ruling.

Any thoughts, other than if the PU had called foul right away, life would have been easier!