Thanks for posting your comments and bringing this to our attention. Generally, the term "Illegal Configuration" applies to us internally. When certain items are no longer available from the vendor and the part numbers are incorrect, the order must be canceled and re-entered to accommodate the new part numbers.
As far as notifying the customer when this change has occurred, we agree that it is in the best interest of our customers to make this information known as quickly as possible. We are working with our internal teams to make this process more efficient.
It's genuinely sad to lose a customer who was interested in buying our latest products, due to lack of communication between the sales and manufacturing team. We strive to provide a great purchase experience to every customer and I regret we missed the mark in your case. I'm glad that you have taken time to write about your experience as customer feedback plays an important role in evaluating out products and services.
Please know that Dell greatly values your business, and we would make the most of a second chance to serve you, should you grant us one.