Completely unresponsive touchscreen

Question

I sent my Lumia 2520 in to troubleshoot the first instance of the completely unresponsive touchscreen in November 2014, just before the one year warranty expired. NOKIA took my device, labeled it "defective" after the inbound inspection. They then "repaired" it and returned it to me two weeks later.
Since then (and sadly, just days after the original one year warranty expired), on multiple occasions the touchscreen has become completely unresponsive. I'm now unable to turn it off or open the sleep screen to login. I've tried the home/power button reset option. Even that doesn't work.
Today when I tried to call their tech support at 888.665.4228, it rings once then times out in dead air.
If my device was identified as "defective," why did I not receive a NEW DEVICE as a replacement?
If the "defect" was repaired, at a minimum, the warranty for that repair should be extended to one year from date of repair, for the original owner.

Answer 1

Check the terms of the warranty which are usually provided as part of the documentation that you receive with the product, otherwise you can find it on the Microsoft web site for your country (warrsnty terms vary according to the laws of the country where the device is sold).
What you have received is normal service for virtually all major manufacturers: if a faulty device can be repaired, then it will be - you only get a replacement if repair proves impossible; and the original warranty does not extend after a repair.