Keep you money where they are now, it will be close to impossibel to get a Thai Bankaccount on DTV,and it has never been the intention DRVholders should have a Thai Bankaccount.
If Thai bankaccount is important, then change to a real long term visa, (instead of a touristvisa), and you may have a small chance to get a Thai Bankaccount when you have stayed some months at a long lease permanent adress.
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9-thailand-to-implement-stringent-compliance-regulations-for-new-bank-accounts?
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77-foreigners-face-new-hurdles-in-opening-thai-bank-accounts/ (Be aware there is a error in the start of the article ( and several other copy - paste media with the same article )
A Thai Bankaccount has never been a requirement to get DTV, on the contrary it has been one of the big advantage over other visa, that you could get DTV as long as you could show 500.000 Baht equivalent in any bank anywhere in the world.
It has never been the intention that DTV visaholders should be in need of a Thai bankaccount.)