Not KL but I am struggling a lot with a duty of care claim with LH here. Emails to them get an auto reply "this email will be disregarded please use the web form".

The web form only has a compensation section, no duty of care. The compensation section has no place to upload receipts.

Compensation claims get denied within 15 mns with an auto email that says "We are so sorry your flight got cancelled but Lufthansa is not responsible or liable for it"... the hell you aren't! The auto email also says to reply to the email if you would like to pursue further. If you do, you get the auto reply saying "this email will be disregarded please use webform", and the Kafka loop is complete.

Grossly deliberate attempt to fob off customers and their claims Not letting this one go!

KL are much much better with claims... at least your message goes through to a human.