Gender reveal mishap..

Today I had my gender reveal party, we went all out and had our whole family there. So after dinner we decide it's time to cut the cake a reveal the gender to everyone. So Upon cutting the first slice I realized they messed the cake up and that the inside frosting was white so after a good laugh we had to tell everyone it was a boy. The party was great and the mishap didn't ruin anything but I'm kinda upset like you had one job and at what point did the cake decorator realize she messed up cause the top of the cake said "is it a boy? Or a girl?. Should I call the manager and make a complaint even though my family laughed and had a great time?