I bought a Camp Master Gazebo at Makro

I bought a Camp Master Gazebo at Makro. I used it only once. We had friends over and erected the Gazebo in the garden. Then it started to rain. It was a light rain (-2mm that day) with a light breeze of wind. Obviously we rushed inside and left the Gazebo as is outside. After the rain the Gazebo was totally wrecked. I took it back to Makro and Camp Master and Makro refused to replace it saying it violated its warranty because it was used outside in bad weather conditions. (The weather conditions was honestly weaker than minimum which anybody can check on the photos)