Really unhappy

I purchased a study desk from Greenleaf Home via Leroy Merlin. When I went to return in store the two staff members had no idea how to assist me with third party purchases and could not even bother to try and be so kind enough to ask someone to try and assemble it for me. It was immediately pushed off onto the third party as if “it is no longer our problem”. Thankfully the lady did call Greenleaf Home for me to find out what the process was.