Wrong information and no inclination to help.
Cons: First leg of flight was delayed by fog. OK... it happens, but almost every customer facing employee along the chain gave wrong information and/or had no inclination to help. Spent an hour going from pillar to post at DUS having been told to retrieve bag from incoming carousel. Told several times it wasn't there and would meet us in DRS. Of course it wasn't. Frankly I've had more help from airlines in the least developed parts of the world. Lufthansa Group.... you must be joking.