Today i went to the kasikorn branch on pattaya klang which does have an international services window. I brought my wise pdf receipt, passport, bank book. They have already dealt with this matter recently for other customers . so i signed a form called "application for issuance global inward certificate" and was issued the item below which they assured me would pass muster with immigration. Very helpful staff said i could return in 6 months when renewal is due and get the same certificate with all transactions for the same cost, 200 baht. Just be sure to bring the above items again. I trust them but on monday will go back to immigration and verify that this certificate is acceptable.