@Gregor *********
....yep .... didn't make sense to me, but that's what I had to do . ..
I went in ( the first time to obtain my one year extension). With all my financial documents ...
Sent me away to obtain the 'affadavit' from my Embassy ....who told me I had to take to the main immigration office in Bangkok to have it 'stamped'
ššš ....which I did ...
Then returned to Prachinburi immigration....who wanted to check and verify all the same financial documents and proof of income I had shown to my Embassy .....ššš as well as bank statement showing proof of the monthly 65,000 baht deposit ( from foreign bank account ) into my Thai account.
Absolutely makes no sense ....
and such a palaver.....but still way way cheaper than having to use an agent