OP seems very hostile, I can imagine you act hostile with support staff also, and this is not a normal exchange...
You seem to have been sent a replacement, which was broken upon opening the box.
MS support staff have no idea to know if it was actually fedex, or if you broke it after receiving, its not hard to put your tablet back ontop of a box to take a picture if you accidentally tripped and dropped it a few hours after getting (not saying you did, just their point of view).
If you didn't have accidental coverage, I can see why this would take time to resolve.
Also, I have had NOTHING but positive experience from in-store, online and phone support. Online chat agents are typically useless... I had a warped SP3 chassis and touch screen issues intermittently ... got my SP3 from the Adobe MAX conference in the states, im in CANADA, and the chat agent spent a day and a half calling all local stores to garuntee they will have an i5 8gb to replace on spot (I needed my device, told him cant mail it in toexchange due to exam week ongoing). The store swapped it out no questions asked upon seeing the warped chassis, took ~30 minutes, everything brand new (pulled the device out of a new box, swapped it with my charger / pen / device (didn't give me box, I had no box, no receipt on me). Also took the time to make sure device was perfect before I left.
MS Support is the best experience I have had with ANY company providing ANY service, the fact its a technology company is outstanding. 30 day return policy no questions asked, $150 2 year ACCIDENTAL WARRANTY (everyone says match apples service level, apple store takes days to book an appointment and does not even offer accidental coverage locally, hah). Try a store, or contact chat support again and go over your entire situation and ask for an advanced swap.