Aurora-R7, terrible customer service

Its been slightly over 2 months since I ordered the Aurora-R7. Like a I never fully opened it up to check out its internals until last night. I had taken the side panel off before but never went further inside. But yesterday I started hearing a rattling sound out of nowhere. I opened up, and saw that I had an Air Cooled System, unlike what I thought I had ordered which was a Liquid. I spent over two hours on the phone talking to seven different reps from Customer care, technical, sales and financial, not a single one of them spoke good English, yet they all insisted they were from Texas. Not a single one was willing or able to help me find any kind of resolution, whether it was getting it replaced or just outright ordering a new part. 

I went to the site and rebuilt the exact same computer part for part WITH the Liquid cooling, and the computer still came up to be over a hundred dollars cheaper than the one I ordered two months back. I tried disputing the price difference being credited toward the purchase of a liquid cooling system from Dell but they refused. They also refused sending a tech to install one if I paid full price for one. They refused any kind of gift card or discount. I threatened to return, but they said they wouldn't take it because it has been more than 30 days, which is Dell Policy. Then I threatened to stop making payments but all they did was transfer me to a department that I had spoken with two times already. The 1 year premium service only allows me to be able to speak with someone on the phone only to be lead in circles for hours.