S2721HGF, cracked screen

Hello,

I purchased a 27" S2721HGF curved gaming monitor from Very 8 months ago in January. The screen on it cracked overnight the other day. I know if there is a crack there MUST have been accidental physical damage but hear me out. I've been trying to get in touch with Dell to at least address the issue. Calling technical support gets me nowhere. I hadn't transferred the warranty and they tell me to call Best Buy (after multiple transfers to incorrect departments). Thankfully this forum exists as I was able to find the transfer instructions here. So I still have at least 10 business days until the warranty might be transferred but I haven't received any reply (outside of the automated) to my email inquiry. 

Now on to the actual issue. This is a single hairline crack running from the top to the bottom of the S2721HGF and it is all internal, there is no physical damage to the outer layer or signs of external force of any kind. I've uploaded some photos below and also bear in mind that I live alone so when I am at work there is no one around.

My main question, is it physically possible that this is manufacturing problem (ie tension from the bezel and the panel, internal stress, an internal component that broke and initiated the crack)? And if not what was the likely accidental cause on my part? In other words, what action would have produced this problem?

Has anyone experienced anything like this or has this ever been seen in the lab or been reported to Dell before? it is a shame as the monitor is very good.

It is frustrating that Dell support immediately brushes cracks off as accidental damage although I realize the vast majority are. I am more than happy to send the S2721HGF into Dell for further inspection, assuming there is an actual way to tell if this damage was a manufacturing defect or not. Why has Dell customer support told me that I have 3 year warranty but all of a sudden that this crack under the screen, the warranty "does not apply". This issue has happened with someone else here with a different monitor model.

I would like this looked in to.