Are the tourism information advertisements distributed on the streets of Chengdu credible?

If the price is low, it is not credible. Some of them make very good verbal promises but cannot actually deliver them. Some even deduct items that should be included. Media reporters have reported in the past: Some people went to Jiuzhaigou. I asked many times if the Huanglong ticket was included, and the answer was that it was included. After getting on the bus, I was told that it was not included. I called and asked, but the other party said ------- they didn't say it was included. Will you get on the bus? Bang, hang up the phone...