Even on a long term visa or to get a long term visa, the banks are reluctant to let people just arrived in Thailand a Thai bankaccount.
You may have to stay some months at a permanent adress in Thailand, before you can get a bankaccount.
Certificate of residence by the book require that you could show proff of staying at a permanent adress for at least 90 days, but some Immigration Offices bend the rules and are willing to supply it earlier.
That’s why banks no longer put any trust in certificate of Residence, and ask for other kind of proof of having a permanent adress in Thailand.
You are obliged to familiarize yourself with the laws in any country you visit, you have failed to do that, or you would have known the Requirements to make a 90 day report, everytime you spend 90 consecutive days in Thailand.
Even this group are full of posts telling the same.
If you were in doubt, you should have asked the Immigration Office or read their website.
Be prepared that getting a Thai bankaccount may be very difficult, when you haven’t stayed in Thailand for months.
Banks in Thailand are like everywhere in the world, interested in having good stable customers, that have a permanent address, a steady easy traceable income, and use the account all year round.
That is why the banks are reluctant to give accounts to people on short time ( read: tourist ) visas, and who only spend part of the year in Thailand.
Don’t expect to get a residence certificat, until you have stayed at a permanent adress in at least 3 month, since that is what the residence certificat should confirm.
Furthermore the added attention on whitewashing of money, is an added burden on the banks, so reluctant depositing large amounts isn’t a guaranteed way to open an account.
The value of a resident certificat, had gone down, since Immigration Officers are giving them to people that are not on a longterm visa, or have stayed severel months at 1 adress in Thailand, so even if it is a formal requirement, the bank make up their own assesment of the stability of the want-to-be customer.
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.