It's not like Kool exposes. If you stay +180 days per year in Thailand you're considered tax resident and you have to pay taxes for the money you remit to Thailand.
yes, I request the certificate to the bank and they sent me the document signed and stamped, it appears the name, my document id, the account number and the balance and datetime.
Some successful cases in UK but better to contact with the Embassy before to be sure. Every Embassy has a different policies. Vientiane is getting harder and maybe it has to be hospital and not dentist.
If not, maybe you can try the Muay Thai or other soft option.