Why did he get a tourist visa? Why didn't he get the appropriate O-A retirement visa, which allows you an easier process to the retirement visa extension.
It's very easy to make up a reason for denying a visa. But not actually send to the embassy. Google them. Lots of complaints, but they are becoming a monopoly in this field.
THIS SHOULD BE THAI VISA ADVICE GROUP AND TOD DANIELS!!!!!!!!!!!!!! Not Bangkok Expats
While you can rely on networking and friendly advice from the kindred souls at "Bangkok Expats Group" on Facebook, some situations call for professional assistance.