Wrong product delivered

I ordered a 1.2 kva 2.56 kwh litium compact power station from Leroy Merlin via their website on 24 May 2024. They how ever delivered a FIREBLOCK LITHIUM Battery Fire Extinguisher – 2 Litres. I phoned their customer service centre to inform them that the wrong product was delivered. The agent informed me that the mistake is on their side as the 2 items have the same SKU. They said that they would refund me, however I asked why I cannot get the ordered product. No feedback. When I phone them the say my case is with the supervisor. I have a screenshot of the product I ordered showing the price I paid. I am very dissatisfied with their service. order number ***-A SKU e8c5560b