AKLLAX with QF.
Hardshell LH-branded suitcase with intact and unopened locks turns up open. i.e dropped from a great height. Claim it in LAX with QF, PIR issued, buy a strap and contact QF's handling agent in FRA.
Suitcase picked up next day by UPS (frame bent, suitcase opens at will with minimal pressure), returned a week later supposedly repaired but in the same condition. Collected again, luggage agency confirms frame bent and beyond repair.
QF offers €200 (the list price of the suitcase a year previously, I actually paid less), no receipt required.
Still pinching myself