1) No ball choice
2) No different ball in the bag - it's at home, in your inventory
3) No surprise, because you've been alerted to buy some when the last ball came into use - take the chance!
4) No worry, you may visit the Pro Shop during the game (or is it the beer cart girl?) to buy some.
5) Not a big thing to finish one game with Starters or even abort it - it's only a video game.
6) No doubt, this situation is solved in a way which is favourable to the company. Take it as a man!