Refusal to pay refund

My order # 000394954 placed on 2 November 2023 consisted of 3 orders 1 x Leroy Merlin and 2 x market place products. the one order from Fine Living was only delivered yesterday, when I placed the order the delivery fee charged was R600.00 (that I Paid), when the order was processed the delivery fee was R275.00. Fine Living aka Calasca state I must get the refund from Leroy Merlin and Leroy Merlin states I must get it from Calasca. I contacted orders@leroymerlin.co.za, refunds@leroymerlin.co.za and contact @leroymerlin.co.za. Nobody is assisting. Calcasca I mailed info@calasca.com, avi@calasca.com and glen@calasca.com - no concrete answers have been received.