@Della *******
that's funny. You say you've got 20 years of experience in Thailand, then you'd know that no one is working on the same script. Embassies and immigration are 2 completely different government agencies that don't communicate and don't know what each other does.
Also each embassy gets to make their own rules, even different embassies in the same country.
Same goes for immigration offices in Thailand, every province has their own rules and requirements for various visas and extensions.