A lot can be said here, but I'll keep it short and sweet. The game has a million glitches, that still aren't 100% fixed. With that being said, don't ever be surprized with anything that you find. I have had this discussion with many of the members in my club, and a bit of free advice follows:
1. prior to getting ready to play, simply check your inventory, all the right clubs, correct ball etc.
2. Prior to making a shot, check to see if your caddy has given you the correct club
3. If putting, make sure that you have the correct scale
all this only takes a minute on your part, and saves a whole lot of aggrivation, during play.
As in real golf, make this a pre-shot habit !