How can I transition from a 3-month retirement visa to a 12-month visa in Thailand?

[How to Go From the 3 month retirement visa to the 12 month variety]([members only]/)

Now I'm on the 3 month visa finally expiring 22 April. With Krungsri Bank I've been told that my account may be opened on 27 February: 4 weeks hiatus.

They explained the 4 weeks as 'the application documents must go to our head office for checking'

Me: "what 'checks' require that long an answer period, when you're already able to see certain bona fides from the original documents in front of you?"

Them: (evading) "This is the consideration period because of the volume of applications from foreigners that it's our policy to deal with this way" [shows me a huge ream of pending applications from foreigners]

So problem 1 is that the application for the 12-month can only commence after 60 days on the visa I have now. ie. 22 March. This combines with 'funds seasoning requirement' that "800,000 THB must be in a Thai bank account for at least 2 months before the first application and 3 months after the approval of the visa or extension." It's actually impossible to satisfy this using this bank and on the current visa because by the time of 27 Feb there is then only 1 month + 3 weeks left on the visa & if I wanted to apply at the earliest opportunity then the bank account only will have been in existence for 3 weeks.

My queries:

1. I might want to exit and re-enter the country prior to the appointment of 27 Feb but I've been warned this terminates the 3 month retirement non-o visa validity, presumably along with it the right for applying within Thailand for 12 month non-o visa. What alternatives & solutions?

2. What to do about the insufficiency of time to demonstrate the 2 month 'seasoning' in a Thai account?

3. How is it I hear that professional agents will apply corporate $funds for 30 minutes in&out, long enough to generate a viewpoint current balance statement which satisfies the financial substantiations to Immigration. That's not 'seasoning' for a 2 month continuous period. Do they play fun and games with the passbook which is able to disguise the client account being bereft of the required balance except at around Date A & then again at Date B which is no less than 2 months later & precedes (12 month non-o visa) application date

4. What is accept a proof of funds, incl seasoning? ATM slips from discrete dates? Or does it have to be monthly statements produced from online, which are going to show funds being stripped out in the midst of that seasoning period?

5. In the example of my home country, I couldn't just produce an up-to-date bank statement on any particular date. I would have to wait for the monthly statement generation date, although I could produce a screenshot at any interim. Are such screenshots always acceptable