Dell :: How Do You File A Complaint With Over A Completely Botched Order?

My latest odyssey with Dell has lasted over 3 weeks and ended in utter disappointment; the experience has been both frustrating and time consuming, but I notice it's not all that dissimilar to some experiences others have posted about, so I'm hoping someone can point me in the right direction.

On 11/24 I ordered a Studio 1737 with an estimated ship date of 12/5. As has been the case for many others, Dell generated a separate order for the Bluetooth module, and like many others I found this frustrating and nonsensical, but I didn't rush to judgment immediately, I decided I'd wait and see if they actually shipped it separately and uninstalled.

Of course, they did, and I received the component on 12/8. I filled out the return request form and asked for an RMA for the component, because I placed the order with the expectation it would be installed professionally. The response I received essentially excused the practice that caused the module to be shipped separately with no disclaimer, and denied me an RMA for the module. They wouldn't let me return it. I went back and forth with this guy for a week, exchanging 6 emails total, each one explaining my disappointment in greater detail than the last. After 6 emails, I still have not received an RMA. Each email merely deflected my concerns and ignored my original request by assuring me not only that I would receive my system and I would be overwhelmingly satisfied, but that he would personally see that the order was expedited.
I fell for this, until last friday, 12/12, when Dell notified me that my order had been delayed for a second time and required my consent to be processed; I logged into the order status site as the email required to provide consent, and then shot an admittedly discourteous email back to the guy who'd been feeding me disinformation for a week to avoid giving me an RMA for a lousy $20 part that plainly wasn't delivered in the condition I expected (I was really annoyed). On Monday, 12/15, I received a response for him, this time assuring me that the system would ship within 24 hours. This pacified me until about an hour later, when I received the email from Dell finally canceling my order completely.

I responded one last time (much more composed and gracious) to tell him I was receiving conflicting information regarding the order status, and to ask which was accurate. This morning, 12/16, I received a terse response from his manager telling me that the order had been canceled "due to unavoidable reasons", suggested that I contact the sales department to have my order reinstated, and asked that I reply to him if I still want an RMA for the bluetooth module (a line his subordinate fed me before, to which I responded in the affirmative).

What do you think I filled out the return request form for, or all the emails I wrote requesting a return?

I'm completely bewildered. I've wasted enough time talking to these people, and I don't intend to continue. I don't even care about returning the thing anymore. The frustration and time lost towers over the lousy $20 lost on the bluetooth module.
All this is added to the fact that Dell delayed my order twice, then canceled it blaming the federal mail order rule, despite the fact that I followed their instructions to prevent that. I don't know where to begin.

I'd like to send a letter detailing this experience detailing my frustration to Dell, on the off chance that someone there is even the slightest bit interested in customer service (then I plan on meditating for about a week and exiling this experience from my mind completely.) I just don't know where, if anywhere, to direct my complaint (the returns department obviously isn't the place, since they don't even know what to do about returns).

They didn't charge me for the system they canceled, only for the bluetooth module that should have been canceled with the system, but if I go through all the hoops they want me to to recover the lousy $20 I'll lose my mind, so it's not about money. I basically want to give them a piece of my mind, cut my losses, and be done with it. Any advice?