i went to SCB today asked if i could transfer from sweden to thailand

inside the office so i would have it documented.

answer was NO, get outside and do it on ATM.

 

the problem is, last time, most of my proof was ATM slips,

and it wasnt good enough,

So: how can i get it documented that my money for the retirement visa came from abroad ?

You would get a income letter from your embassy to prove your income to apply for the extension of stay based upon retirement.

If immigration wanted to see backup proof for the letter you could show a bank statement from your bank in Sweden show income going into it which would also show your ATM withdrawals.

If you were to open a bank account at a bank here you could transfer your money into it from your bank in Sweden.