well i posted the cheque this afternoon when you said it was correct
but it seems now after reading link that aircraft vfr and under 2 tonnes are not supposed to be charged in germany
i came on here for some advice from a atc person that i would have expected them to know as in the uk ive never had a charge sent to me
so some duff advice got them some money good job its only 21 euros
Are you new here?
If you're flying a 2 tonne heli around Europe you must know that you'll find the definitive answers or a pointer of who to contact in the AIP - and that's not much harder to check than asking on a web site that is seemingly populated fewer and fewer professional contributors!
More usefully it might have been helpful to mention who was billing you and what the charges were for. Maybe then you would have got a more specific answer.
Grumble over - and sorry you got the rough end of it - but it's been a bit of a bad day.