Thanks very much! I will contact them...First, I will assume that there has been no "natural disaster, terrorist attack or any other circumstances" beyond the company's control that would prevent the company from issuing a cash refund.
What sort of mistakes are you claiming the company made that led to you rejecting 4 designs out of 6 (for a total of 120 rejected prints)?
I do not see how you can expect a refund for the 2 designs approved and completed. It sounds as if you might be thinking you can collect not only for the entire order placed with the company (the approved and completed designs and the designs under dispute) but also for your loss of profit and time, and for your frustration and aggravation, and for feeling bullied. I suggest you scale back a bit on your expectations. You can potentially get a partial refund for the work not completed (or completed to your satisfaction). Collecting on anything else does not seem to be within the realm of possibility, based on what you have stated here.
I do not recommend giving the company a bad review on Yelp or elsewhere. Posting a review may make you feel better temporarily but it stands to accomplish little and, if the review is not very carefully worded, you put yourself at risk of a lawsuit.
I am not going to comment on the contract terms you quoted because the contract needs to be personally reviewed in its entirety by a professional in your area. You might want to sit down with an attorney if you feel you are entitled to a full cash refund and are thinking of taking the company to court. You can contact the state Bar Association for attorneys in your area or perhaps there is a legal aid clinic in your area where, for no or low cost, you can have someone take a look at the contract, go over the facts with you, and provide an opinion.