that doesn’t make sense. What your bank account balance was over the last 6 months is irrelevant to what you have now to support yourself during a visit.
the flight was booked some time ago. Not a lot of options using miles. I think sending one or two of the bags via the post office at BKK is my best option.
it’s also true, or at least used to be true, in the USA. I once tried to do some banking in another state and was told it wasn’t possible. Same bank but different.