Hehe, yes, very well described.
Also I would mention their Financial bureau constantly claiming there is a debt on overflight fee but after a couple of calls and "we DID pay that money on ... through ..." they would admit the debt has been already settled.
Nonetheless, this will not get over to the Flight permit dept. as those would continue to claim they cannot approve your flight due to unpaid invoices.
Gotta love 'em.