If you have a tourist visa they should change it to reflect the visa. I had this happen to a friend last month at Phuket Intl and he went back and in 20 minutes it was updated.
Emphasis on "almost" is important here. Probably should ha e said you stand a better chance to win the lottery.
I have tried almost 20 bank branches in Bangkok and Phuket and refused at all due to visa (METV). Most who say it's easy here have not done it in some time.