Suspicious 'Stainless Steel' Red Rhino Pump from KLB Engineering and sold by Leroy Merlin

We bought a Red Rhino pump from Leroy Merlin on the 12th of March 2025. KLB Engineering is the supplier of this pump. The supposedly 'Stainless Steel' pump started leaking after just two or three months. We are still waiting for the matter to be investigated by the 'Supplier'. My concern is should this pump be allowed to be sold as 'Stainless Steel' or even at all given it failed after just 2-3 months? Who must we report this to? Should Leroy Merlin or any other supplier be selling this pump?