My Sims almost never have free will and they still do things to annoy me sometimes. I've screamed at my screen at them numerous times. But in the end, I don't punish them, it's not their fault as others have said. Now, as for townies... usually I just go to manage households and delete those that are bothering my Sims in some way, but sometimes I let my Sim take matters into their own hands.
For instance, my Scientists use the freeze ray on co-workers that won't give them a DNA sample, a metal or a crystal. I had one freeze Thorne Bailey too when he wouldn't give her an autograph. :p My witch turned Judith Ward into a fish once just because I got annoyed at the self-absorbed Diva always showing up EVERYWHERE my witch went. Plus, much like my Scientist, if another Sim raced over and stole a dumpster my witch was about to dive into, she'd use the Chillio spell on them. She'd also freeze any Sims trying to interrupt her with banal chatter as she was dumpster diving too. Eloise looks like a sweet, bobble-headed dingbat, but she is anything but that. :D
Speaking of bats, Vlad swooped in as a bat and stole one of my Sims drinks just as she was reaching for it in a bar once. I don't think he can even drink anything but plasma without getting sick so I don't know what he was thinking. I had her throw a drink in his face and fight him. She lost, the first time, of course, I mean, he's a vampire and she's not. But I had her fight him twice more until she DID win! >:)
I'm sure there's other things, but those are the most recent instances I can think of at the moment. :)
Happy Simming! <3
