Z22 Problem

In the short time since Christmas, my Z22 screen seems to have cracked! Now, in my employment I use all kinds of gatgets & put them through the wars, however, this particular item was a gift and I have only used it for personal use. I had it in the top inside pocket if my jacket in a case, and when I went to use it, it was cracked from top to bottom.

1). Does anyone know how much it'll be to get fixed?

2). Sureley there's gotta be some kind of design fault for it to be so fragile - does anyone have any info on them, or had similar problems?

many Thanks