Incorrect track settings, who is liable?

My T4 campervan had slightly worn ball joints. They were replaced. At the same time, the alignment was readjusted at a second workshop with a tracking record. After only 1,500 km, the front tires, which were still in very good condition, were both worn down to the outer wire, and the old tread remained on the inside. Annoying, being in the middle of Sweden and on vacation. Who is liable? Should I sue the alignment workshop if they refuse any goodwill?

Before, everything was fine and the bus ran smoothly for over 7,500km on the old tires.