@Br***
, did your director bother to pick up the phone and call the thai consulate in Vientiane or Savannakhet (which both answer their phones on the first or second ring) and ask them in person??
OBEC, and the MOE don't have a dog in the fight of the MFA issuing visas at the thai consulates scattered around the world AND unless the MOE paperwork (which usually just says "any thai consulate" is addressed ONLY to the thai consulate in S/A I'd say you can go to any consulate that will issue visas to S/A passport holders.