Refund on items taking months

I ordered some tiles online 9 November 2024, 7 of the sheets were damaged and I logged a return, It took a few days for them to contact me and by this time I already bought some tiles, I mention we will see if we can use some as off cuts which we were not able to, they finally collected around 6 Dec, The amount seemed very low, when asking for feedback only 2 were refunded and they will find out about the rest, we are on 17 December over 3 months for a refund, There is such a massive finger pointing match here were it is supply chain, then the store etc etc, It is very poor look to make your internal politics and poor online system the customers problem, at the end of they day I ordered from Leroy Merlin, all the partners is chosen by you