They probably told you you cannot enter again without the proper visa

@Denny ******

I used the Cardiff Consulate, very easy

@Denny ******

You cannot get a Visa stamp at Embassies/Consulates any more anyway

@Werner ***********

That is within 72 hours so it's ok

Why not get a new Non-O before you return?

I think you may be talking of the single-entry Tourist Visa which had 90 day validity and gives you 60 days on entry. If that is the case you could be asked for the 3 tourism entry proofs :

- proof of accommodation for at least your first few nights (hotel booking or a letter of invite from a Thai)

- proof of onward travel (international travel ticket leaving Thailand within your initial entry stamp exit by date, currently 60 days)

- proof of funds (20,000 Baht or equivalent in any major currency in CASH per individual, or 40,000 for a family)

@Donald *********

You go into a branch with your passport and bank book and they take your photo. You may also have to verify your Thai phone number.

@Tore ********

The part that says for a retirement extension that it must be in the account for 2 months prior to the application then for three months after the extension and never drop below 400k for the rest of the year.

@Donald *********

For non-verified accounts maybe, mine takes seconds

@Caress *****

bar-stool talk so it must be correct