Terrible mom!

I am a terrible pet owner. Absolutely terrible. Dewy has a thing with barking at people, well just barking in general. And I have been trying to find ways to stop it. Spanking doesn't work, and yelling doesn't work. So I resorted to something that I thought that I never would. A collar. Not just any collar, but a shock collar. Well this one said it sent out static first to stop them and then really low volts was next again. Well, I bought it after some encouragement from my husband. And I put it on her. She walked around for hours not making a peep. I thought YES!! it worked and she didn't do anything. Not so much. We went out side and she saw another dog, and so she barked at it. Well the collar sent "static", and she FREAKED! She yelped and jumped. Then she barked again. And once again she barked and then yelped and jumped. That sound of her yelping broke my heart. It was such a sad sound that just was terrible. People were looking at me like I was killing her. I felt soooo bad. I immediately took her inside and took it off of her. Now she is laying on the floor on her back with her legs in the air, like she is dead. Ok, ok, yes she sleeps like that sometimes, but still. I feel so bad.

So I need your help. Does anyone else have any ideas on how to get her to stop barking. With out shocking her!? HELP please