Scratching Post with poor quality!

Have a young cat (no 2 kg body weight) and the scratching post is completely broken after only four months. The substance dissolved after the first three weeks of the scratch columns. Now, the columns are scratch after four months mainly just from solid cardboard. The sisal scratching the tribes had also unraveled after a short time. You would think it should last longer. Had I now buy a new scratching post as this product is now unstable and represents a Abstürzgefahr for my cat. The thread of heranschraubbaren column is now "worn out", so that the columns no longer hold on to the third platform. I advise everyone on this purchase and recommend prefer to invest instead I have to buy two a few euros more.