Mali,
Your dog is confused, not pouting.
This is just a suggestion, but I would remove the prong collar for now and learn more about dog behavior. The prong may help some issues in the short term but seems to be breaking the trust between you and your dog, which will create more problems in the long term.
You seem to see the confusion as "pouting" because all you have a "human" reference to it. In other words, pouting is what it looks like to you but I would see it and the dog sees it as confusion.
If the correction is understood the dog won’t appear to pout or remain confused.
The way I always try to train when using positive punishment or negative reinforcement is to end with success and never end with a correction. The dog needs to end by understanding the lesson. This does not sound (read) like it is the case with your dog.
It also seems that the dog is respecting the collar and does not respect you. The collar is NOT a magic wand. It should be put on the dog at least an hour before you train and taken off an hour after you train. It should never be a struggle to get it on. If it is a struggle to put the collar on the dog, then you should back up and teach the dog that putting the collar on is a "good thing" or at least "not a bad thing". Do step #1 before you do step #101.
Also learn about level of correction and timing. Correcting too hard or making a correction that is poorly timed will only serve to confuse the dog further.
This is extremely hard to convey over the Internet in text form. So seek the help of a qualified trainer that you are comfortable with.
I hope this helps. Hang in there! Mistakes are the best way to learn! You will get there!
Safe training,
Chris Fraize