Nice to look at, but poor quality

I own this envelope now good four months and am in all the time very carefully with my device and the sheath handled. It's never fallen down somewhere or strong triggers.
Nevertheless, the plastic corners began to cancel more than 2 months. Meanwhile, as many places are broken off, that my device is no longer stays in the sleeve.
For the magnetic lock and 2 small metal rails are incorporated into the shell. Of these, one has relaxed and is just fell out.
That is, after such a short time is the envelope for nothing more. An absolute bad buy and money.