Incorrect item delivered

I placed an online order with Leroy Merlin , Little Falls and I received the correct box with the incorrect size of the shower drain inside the box. I logged a call for them to collect and replace the item and I was told the total process should take 5 working days. 4 days late and no call or collection. Since, this was drain was needed urgently, I decided to go into the store myself and return the item. To my luck, they do not have stock on that item at any of the branches and it is still being advertised on their website. I wasted 1 hour of my time and fuel for this mishap. Very angry customer