I am just as pissed as you are, it seems like a lot of these manufacturers like advertise a product that they cannot deliver and also fail to communicate with their customers.
Well, I'm pretty pissed since I ordered on 8-18 and it was shipped on 8-20 and I haven't gotten an amp or a response to my email. As one person has already said, if there was time to process the payment then there was time to respond to the email. I can guarantee that no matter what sound quality I get out of my amp 2 things are going to happen. I will NOT be shopping with them again as I vote with my dollars and there will not be positive feedback left.