I think that you should get a refund, if you were inconvenienced, your stay was interfered with. If they didn't provide the service, you should ask for the refund. A analogous thing happened on an AA flight from BRU-ORD. The engine cover threw off on TO and hit the wing, putting a hole in it. They landed safely at LHR and put us on another plane. I received a full refund on the return, without asking. It was a bit scary, especially when the co pilot leaned across us in Business to check the damage and said that it didn't look good.