https://airlinehelpagent.zohodesk.com/portal/en/kb/articles/lufthansa-0ffer-does-lufthansa-give-a-refund-if-prices-go-down
https://discuss.tindie.com/t/live-support-does-lufthansa-give-a-refund-if-prices-go-down/534779
https://airlinehelpagent.zohodesk.com/portal/en/kb/articles/100-trusted-how-do-i-contact-lufthansa-airlines-about-a-complaint
https://discuss.tindie.com/t/instant-help-how-do-i-contact-lufthansa-airlines-about-a-complaint/534781
https://discuss.tindie.com/t/explained-clearly-lufthansa-airlines-really-free-cancellation/534783