Just eaten at Tortillas Breda. Food okay, but felt...

Just eaten at Tortillas Breda. Food okay, but felt pretty cheated when the bill arrived. We had ordered two 25 euro set menus, which were advertised on a plate outside as well as on the menu. When I went to checkout, the blonde lady who made up the bill came up with a confused story, the core of which was that we had to pay for the dishes according to the stated prices on the menu. So no choice menus! I did so in a somewhat bewildered way, which I regret now of course.
It may only be about 12 or 13 euros, but I still feel ripped off. So my advice is to everyone: STAY AWAY!