Lufthansa Complaint - Be aware buying tickets using Miles and More
You can buy flight tickets and make use of bonus points via the Lufthansa Miles and More program BUT be careful! Just bought 3 flight tickets for my wife and two children for our summer holiday in Spain; decided to make use of points for my own ticket, which turned out to be bad business for us: Miles and More - on some routes - make use of expensive tickets and claims accordingly tax, meaning that you will be charged extra(besides the used points). In our case I ended up paying must more for the same ticket as rest of the family and at the same time lost a lot of my bonus points.
As a consequence of that - and because Lufthansa will not refund - I have cancelled my membership of Miles And More and I have changed my business travel profile to exclude Lufthansa in the future.