Although I am a member of HAK, they expensively ch...

Although I am a member of HAK, they expensively charged me for a repair after which the car was not properly repaired, which I would not have known had it not gone to technical preparation.
Filed a complaint, got a drizzle. Repairing their repair was expensive to pay for in-house service.
Bypass them in a wide arc, and you can throw a HAK member in the trash.