Well, I was one of Pong's no show customers, but not that I didn't try to meet him. This was probably ten years ago (he's been in business a long time, and before he added the music massages). He sent me instructions on how to find his apartment on a side soi off Thanon Petchaburi, about halfway between Ratchathewi BTS station and Panthip Plaza. At that time, he had a website with a map to his apartment. He was also on Gay Romeo listed under Bangkok escorts , before it became Planet Romeo.
I made it to his apartment building, went upstairs, but there was some wonky and missing numbers on the apartment doors. I called him twice on my mobile (this was before smartphones). I contacted him on the phone, but he was reluctant to try to find me in the building. I knocked on two doors, but they were not Pong's apartment. I searched the building for about 20 minutes, but was unable to locate him. After 20 minutes and two calls to him, I gave up and left.
So you see, not every no show is intentional.