Order Delayed for Seventh Time

I am having difficulties with obtaining information about the status of an order. Below is a timeline of my attempts at resolving this issue. Any and all suggestion are greatly appreciated.

June 26, 2012 order placed for XPS 8500 (fast track config 02) - estimated delivery July 3.

June 28, received notification (email) that order was delayed - estimated delivery July 5.

June 29, received notification (email) that order was delayed - estimated delivery July 6

July 2, chatted with a Dell Rep who stated order should ship soon and apologized for delay

July 3, received notification (email) that order was delayed - estimated delivery July 10 - Chatted with Dell Rep who stated that a "Dell case specialist" would follow up with with directly

July 4, received notification (email) that order was delayed - estimated delivery July 11 - Chatted with Dell Rep who stated that the order would ship by July 5 -
For verification I also phoned - the rep and supervisor stated the order would ship within 24hr and a case specialist would phone - The supervisor stated that the order would be expedited.

July 5, received notification (email) that order was delayed - estimated delivery July 9 (expedited shipping)
Phoned and spoke with Dell Rep - Rep stated that the order would ship on July 6 - Filled out the "Unresolved Issues" form on the website

July 6, received notification (email) that order was delayed - estimated delivery July 10 - Filled out another "Unresolved Issues" form on website

July 9, was contacted by "Dell Case Specialist"
She informed me that my case was unique and that they could be find an reason why my order was being delayed. She asked for an additional 24 to 48 hours to follow up.

July 10, received notification (email) that order was delayed - estimated delivery July 11

At this point I do not know where to turn.