The Thai website booking engine seems very unstable right now, and I have found it hard to access the last few days.

In frustration, I changed to thai language (to the left of the dark blue 'book now' button) to see if it made any difference - you do need to have some elementary thai language skills since the cities are listed in thai 'alphabetical' order.

And...guess what...I subsequently received a consistent and speedy response.

Cheers,

TK