This is the main place to buy public transport tic...

This is the main place to buy public transport tickets in downtown Amsterdam, easy to find and helpful that it's next to the central station. However, I had to go back a second time as the employee who was rather rude when I was asking simple questions told me you can buy bus tickets on the bus with cash, which you cannot. She was insistant that we not buy paper tickets because they would get wrecked... It was an annoyance, but luckily I had a rental bike one day and was able to head back and get bus tickets that I would need the following day when leaving Amsterdam with all my luggage. The employees should be knowledgeable of the info they give out, especially considering how many tourists visit Amsterdam. Not to mention had I not had a bike it would've been a 30 min walk each way to my hotel.