Bonjour Rose,
If a scam is when a Tour Company waits 5 minutes after the scheduled departure time and then must take the difficult decision to leave a latecomer behind though the Tour Operator made it clear for people to arrive 10-15 minutes before the time of the tour for check-in, then YES this was a scam and we are really sorry you are looking at things that way. As Tour Operators, though our aim is to provide the best experiences, we, unfortunately, cannot reach that goal if participants do not read the instructions. We do understand that traffic conditions may lead travelers to arrive late at the tour departure point but these same bad circulation conditions force us to leave on time to run the tour in good conditions. As far as the refund which was denied to you, I am sure the same would have also been denied to you if you had missed your plane or your train. Thank you very much. Arnaud