Faulty car jack claim rejection

I bought a Audi vehicle from their dealership (Menlyn) in 2021. Last week I had a tyre puncture for the first time which required me to change the wheel with a spare on the roadside. I took out the brand new jack (scissor type) and placed it under the vehicle at the allocated spot. I connected the cranking handle. On the second swing (revolution) the cranking handle broke on the weld. This tells me the weld was not strong enough or had a defect. Note that none of the tools have ever been used before. Still straight from the factory condition. Audi refuses to replace the handle citing that the vehicle parts are out of warranty period. Was I supposed to test all the tools to make sure they don't brake before expiry of warranty? The vehicle is still under motorplan.