Last October I needed a new trolley jack and ended up with a £50 2 ton low body one from Halfords. For some reason I didn't get a receipt by email (they've stopped giving paper ones out for Covid reasons or marketing mail shots I guess!). At the weekend it failed to hold the 159, just releasing slowly.
Today I took it back with my credit card statement as proof of purchase and to my amazement they traced the purchase on their system with just a date and part number. It took 5 minutes but they managed it. And then they were happy to replace or refund. I ended up with a 3Ton trolley jack as they were out of stock of the original one. Bonus is a new full guarantee on the new one. Bummer is it's not a low chassis, hopefully it'll still slide under the Alfa!
Guy