Hello, you paid for a package, not only for the Tickets.
In the price is included also a 1-hour walking tour of Verona highlights with with official City Guide, 1 ticket for public transport, assistance in loco, informative booklet and text for Opera.
Evidently you arrived late and could not participate in the walking tour .. If you wish you can do it one of the next days of the opera without paying anything.
Please be careful next time and read the inclusions before leave a review like this.. :(
Thank you, Best regards, Riccardo