hello, I was supposed to fly with Finnair from Finland to China, but my flight was cancelled and rerouted for technical reason and thus I was delayed by more than 8 hours on arrival, when I asked for compensation, the airline replied the cancellation was caused by "mouse trapping operation", an event supposedly beyond their control and therefore I am not entitled to any compensation. Is this rather ridiculous reason really valid and disqualifies me from getting any compensation? I was informed about the cancellation 7 hours prior departure, which I guess could be enough time to catch one mouse...thanks for any comments or possible advise for further action.