I like a deal as much as the next person, but I don't mind paying the extra if good service is given, which definitely hasn't been done. All of my equipment was bought from Mom and Pop shops at full price, because they took the time to listen to me and I listened to them. Thats what this whole situation is about.
Now had the mom and pop shop happened to own an online store with a coupon barcode, I am quite certain you would have tried to pull the same gimmick on them too.
Now from a mom/pop shop point of view, if you went into their store and offered them $300 for a $500 Oppo player and they declined your offer, would you expect them to call you the next day with regrets? Get over it man. Sometimes we all have to live with rejection. Its part of life. Chose another place to shop that will give you all the email notifications you desire.
We get that you are upset that you didn't get a "Nice try for misusing a coupon but we couldn't honor the sale" email so move on and stop wasting space on this forum continually repeating your case.
It seems to me you just want attention and this is a pretty sad way of getting it. There are plenty of free online dating and social networks that would better serve your needs.