Where my order at?

Gempar! My Diesel XXX book that I have ordered waay back in November still hasn't arrived yet :(. According to Amazon, the book was shipped on 21 Nov and supposed have been delivered to me by 15 Dec. What's more, I have paid for expedited shipping (an extra 10$) just to make sure it does come on time... talk about irony eh? Having being inspired by one of my friends recent crusade for consumer rights, I was inspired to write to Amazon to 'alert' them about my situation. So here is thier reply, which I am happy to say, came but a few hours later:

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Thank you for writing to Amazon.com to bring this matter to our attention.

First, please allow me to express my sincere apologies for any frustration that has been caused. It is certainly not our intention for our customers to have anything but a pleasant experience at our store. I see that the order summary in Your Account estimated it would be delivered by December 15, 2008

Normally we would send a replacement order at no additional charge, but in this case it is possible that you might receive both the orders and it will be an additional inconvenience for you to return the duplicate shipment.

Unfortunately, in spite of all of our efforts, there can sometimes be unforeseen delays, and in this case we would ask that you wait a little longer. It's been our experience that the majority of late packages arrive just a day or two after the estimated delivery date. Therefore, we would like to ask that you wait until close of business on December 31, 2008 for your order to arrive.

I am sorry that the tracking information on the Deutsche Post web site appears incomplete. If the package has just been shipped, it may not yet have reached the first Deutsche Post hub. During this time, Deutsche Post tracking information may indicate "Currently there is no tracking information available. Please try again later."

Also, in order to speed delivery, Deutsche Post does not location scan all of their shipments, which occasionally limits the amount of tracking data. When shipping volume is high, packages are processed in bulk, and the first time a package is scanned may be upon arrival at a regional hub near the destination. In some cases, tracking information may not appear until the package has been delivered.

Please note that we take full responsibility should any item become lost or damaged while being delivered, and we are more than happy to replace these items at a cost to ourselves.

As a representative of Amazon.com, I want to assure you that we value our customers' trust above all else it's the foundation on which our company was built. Please know that we'll continue working hard to ensure that you receive accurate service, and to minimize the chances of anything like this occurring again.

Again, I apologize for the delay, and hope that your order arrives soon.
Thank you for shopping at Amazon.com.

Best regards,
Amazon.com

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So, what should i do? Give them the benefit of doubt and just hang in there for a couple more days?.. While I'm a bit peeved at having to wait longer, I do like the assurance of getting a free replacement if it was indeed lost in transit. Still, the distress caused is rather annoying. Sigh, this is soo not what I signed up for.