Appalling service

I bought 2 outside doors on the 09/01/2021 at Leroy Merlin little falls 11 months down the line the door is ruined. I informed them of what happened they then sent 2 consultants from that department to come and check the damage out. I was then told by these consultants that I had installed the door wrong hence the damage,I informed them that when I bought the door there were no instructions whatsoever and to prove this I went back to see if these doors now come with instructions but still they don't it's just a plastic wrapping without a paper inside of how to install or take care of the wood. Bottom line they refused to repair or replace my door they also refused to give me contacts of the ombudsman but I am not going to give up as I did nothing wrong as a consumer. All I did was buy a door and that's it.