Your passport with the visa inside is the document that immigration gives you to "confirm" that you have a visa - there's no separate "letter". If you have really been issued a visa, there's no reason why immigration would still be holding your passport. You should start asking some hard questions to your "agent" at this point.
Bangkok requires a lease for issuance of a retirement-based Non-O at Chaeng Watthana, but I have never been asked for one when applying to extend my stay.
, did they ask you for that, or did you just bring it on your own? (Same question for the photos in front of the house, which are typically only requested for marriage-based extensions.)
Of course it's illegal - you're signing a sworn statement that is knowingly and undeniably false, which is a felony. Are you likely to be prosecuted? No. Is it legal? Absolutely not.
appears to be saying that the incoming funds went through Kasikorn en route to her account at Bangkok Bank, and that Kasikorn gave her a credit advice showing that the money had originated abroad. That's pretty common with Wise, but shouldn't be happening when she has a BBL account and selected "funds for long term stay" from the drop-down menu.
Many other people have reported successfully using those credit advice letters from intermediary banks at immigration offices, so either the officer she dealt with didn't understand what it was, or her local office just doesn't want anything that varies from the norm.
Ubon isn't one of the cities where you can transit through Bangkok and then go through immigration at the final destination, but Samui is (if the ticket and luggage checking are done correctly).
The 800k can be kept in a foreign currency account at a Thai bank, but the amount has to always equal or exceed the designated THB amount even as exchange rates fluctuate. You do need evidence that the funds came from abroad if you're applying for a Non-O within Thailand, but not for annual extensions.
That's technically true, but since the Non-O visa I received from immigration has the word "RETIREMENT" stamped on it, I would say it's a distinction in search of a difference.
You should probably ask the immigration office where you plan to apply. The rules say the money is supposed to have come from abroad, but I understand that officers can waive that if the funds have already been in Thailand a long time. This may not work, since they may see it as your wife's money, not yours, but it's worth asking before you go to the trouble of transferring more - the worst that can happen is that they'll say no.
To show that the funds came from abroad, your bank should be able to give you a paper that's usually called a "credit advice" - it's separate from the bank book and bank letter, which you also need. (The proof that the money was transferred from overseas is only needed for the initial Non -O application, not for any subsequent extensions.)