Same here and I never get any answers. At this point I may have to file an official complaint if they don't send it back. Update, the service was completed and it was sent back to me. The warranty was extended by 3 months.
I cannot afford to wait another 2 months while you try to find parts, I want my laptop sent back to me as is why is this so hard? I have called everyday since last week and it still has not been shipped back to me. This has been a completely terrible experience and I will never do business with Dell again. Send me my laptop back I actually needed by today. I don't want to wait for you to finally figure out how to get parts I want my laptop back as is. It still works despite the power button issue. I haven't even finished paying for this thing yet, which by the way I want a credit on my bill. Next time Dell will not even be looked at nor will I recommend this company to anyone who asks. 
Getting my laptop back from repair