Very very poor service!

So, I'm not usually a person who writes comments on these platforms, but Leroy Merlin online have pushed me with their poor service. It started of by buying products online and was very impressed with the fast delivery time. I ordered 750 upholstery nails for a client of mine who was particular on the nails she wanted me to use on her antique chairs, but when it arrived it was not remotely the same as the description on the website. I then tried to phone their number but was unable to speak to a person directly. I then e-mailed them, attaching the pictures of what I have received and what was described on their website. (CLEARLY A HUGE DIFFERENCE). Since then (4 weeks later) I sent numerous emails asking for feedback, I even said if they don't have stock to be replaced to something similar but to send me pictures so I can decide. The replies ranged from "Please send us the picture of what you have received (I already did that in the FIRST emial), "We are waiting for feedback from the warehouse", "We will send your request through to our refund department (which I rep**** I didn't ever asked for a refund, I want a replacement). My client is now very agitated towards me for the prolonged waiting time. If anyone buys online from them, God forbid you get the right item first time! Lets see what happens in week 5.