How can I obtain the required bank letters for my Non-O Visa application given the issues with Transferwise's SMART transfer?

Transferwise/Immigration problem. I am trying to get a Non-O Visa. Requires 2 bank letters- one of them verifying balance, the other indicating funds came from (were transferred from) overseas. The problem- Transferwise now has a (new?) banking relationship with TMB Bank Thailand. It sends the money from My US bank to TMB, then does a "SMART transfer" to Bangkok Bank (my Thai bank). Because it comes in as a SMART transfer and not an foreign transfer, Bangkok Bank is UNABLE to send the second required letter and I am absolutely stuck. Any ideas or information is greatly appreciated.