Have you tried Siam Paragon or CentralWorld; tourist heavy malls? Kasikorn is your best bet.
Acquaintance was successful last month. Home country Drivers license, Passport, lease from condo (that seems to be the key document). A couple dozen banks, and was successful on his first visit to CentralWorld Kasikorn branch.
Also where I was able to open my account on a tourist visa a year ago.