Already heavily damaged after 10 days!

This product consists of a plastic casing from grip the phone, she even stuck without finesse on a faux leather piece, but good for the price ... It does not preclude that they could have chosen a better plastic quality, mine have not held 10 days prior to deteriorate sharply at the corners, the telephone is still maintained, but for how long?
Note that I bought the model with vertical rabas (the criticism), and another with lateral rabas, well, same design and even weakness after 10 days.
Flee.