can you overturn a call?

[Lotto]

By rule, you cannot overturn a partner's call. However, if your partner makes a call that you are 1000% sure is wrong, blow your whistle and go to him/her and explain quietly. Then let him/her change the call.

Pregame this before every game. I always say that I won't come unless I am 1000% sure; and that I will always change my call if partner comes to me.

That being said, it's not clear that going to your partner in this game would have been a good idea. If this happened in the first minute of the game, just imagine how many times it might happen in the next 31 minutes. (Gulp!)

Get in, get done, get out.