Outrageous. You should write to the
Hellenic Civil Aviation Authority
Air Transport and International Affairs Div Air Transport Economics Section D1/D P.O.B. 73751
EL - 16604 HELLINIKO
Tel. : +30 210 891.6150
Fax : +30 210 891.6193
d1d@hcaa.gr
One of the big problems is that baggage is not covered by EU261, so you have to rely on the IATA rules, which are somewhat vague, but you are entitled to cash compensation.