Translation of apostatize in Spanish

All sorts of people were sitting in the restaurant, locals as well as foreigners. One could see that the city had some modern places too and that it was not the Vietnam we had imagined.
I can understand a little Spanish with the base of Italian and heaps of words sound familiar. I will try to have conversations as much as i can. Just learning the vocabulary and the grammar isn't enough!
Instead, we gave him one of our Swiss chocolates as a gift so he would leave us alone. It worked: the boy went to the couple sitting next to us and tried to sell our Swiss chocolate for 2 Pesos.