very disappointing 157

The product comes quickly. The park goes smoothly, only problem closing the top is already broken. I install it anyway, the next morning I found that our little Lhasa Apso puppy a walking quietly in our rooms and not in its park, the closing of a door is broken. Then the other door and the seams are not required. 3 days later the park is good for the trash. After contact with the vendors it offers me 10% off and wonder pictures, after he proposed to me ca 30% (30% on what?) Otherwise refund the product but returns to the park at my expense, as you say AC that comes almost as expensive as the park. We are at an impasse at the moment. It's a shame and it is the first time I'm really disappointed by a seller Amazon.