Having finished the late shift for an emergency at...

Having finished the late shift for an emergency at the last minute my girlfriend and I could not go to the show booked at 21.30 We tried several times to call to explain the situation, waiting a long time without receiving an answer. The day after my girlfriend called to explain the situation but found a very rude lady on the phone answering that you could not use the tickets for another evening and saying that poor to warn the day before. I tried to call but nothing to do.
Result: 60.00 thrown for us but earned for them.