Similar to all your posts.
Heavy handed using terms like "dunderhead" to describe those that do not use agents..
The amounts and easy access to agents you are posting seems to suggest Jomtien.
Some immigration offices simply do not deal with agents.
In some instances the stamps are obtained elsewhere.
As, I pointed out in another post... the paperwork for extension retirement is not extensive.
I often suggest folk use agents for various reasons, not the least being mobility, insufficient funds etc.
Bit rich to refer to those opting to not use an agent as dunderheads.