XPS 12 order cancelled several times and Customer Support has no clue why

This is my worst experience with any kind of online purchase I ever made. I ordered an XPS12 laptop a month ago. A week later, I received an email saying there are production delays and my shipment was delayed by 2 weeks ago. Few days later I received a 2 line email saying my order has been canceled without mentioning any reason. No one from Dell contacted me with any explanation on why it was canceled. I spoke to Dell Customer service and they mentioned that there is potentially some shortage of components or some kind of illegal configuration though I picked a standard XPS12 laptop configuration. So I requested them to reprocess the order and it was also canceled. again Later the customer support told me it may be due to a coupon I used though that coupon was available online as a link in the page I ordered the laptop. Believing what they said, I tried one more time reordering the laptop by removing the coupon (actually Dell customer support ordered laptop on my behalf). A week later, my third order also got canceled due to the same reason: illegal configuration. So it is not the coupon that is causing the cancellation. No one seems to know the reason. There is big disconnect between sales and manufacturing. This is a $1100 laptop and Dell doesn't seem to care about customer service. After 3 attempts with different orders, speaking several hours with Dell customer service and waiting for more than a month,  I have had enough and finally gave up and bough a Leno.