Unfortunately always arrived Broken

I bought this chair in order and he always arrived with broken side interface.
Too bad, my little brother (13) was super happy about his birthday present, but could even after the second time to try because we had him always send back not the chair.

As a recommendation, this subject should not be thrown during shipping, the interface on the side is made of painted plastic and breaks appear immediately.

Nevertheless, good handling and always fast there, but unfortunately not in the desired state.