No, automatic tax residency starts after 180 days resident in the Kingdom in a calendar year. Filing of a tax return is independent from being a tax resident. You can be tax resident and never have a filing requirement.
Your visa status is irrelevant to Thai tax residency. Spend 180 days inside the Kingdom in a calendar year and you automatically become a Thai tax resident. Whether you have to file a tax return is separate from becoming a tax resident. Filing requirement depends on your personal circumstances.
Jomtien is my local office, they only care if you move address not if returning to same address even if returning from abroad. It’s such a busy office they don’t want people doing pointless reporting. It’s about the only good thing about the office.
any Thai bank will freeze an account if they cannot fulfill their KYC procedures. Most recently there has been a clampdown on the phone number associated with the account not matching the bank details.