Sorry
@Ti**
, :/ I only asked to make sure your country is NOT on the list of prohibited countries at nearby consulates.
I didn't want to send you somewhere for a visa if you can't get one.
The good news is guatamala is NOT on the list of prohibited countries so you could go to the thai consulates in Lao (Vientiane or Savannakhet) or Malaysia (Kuala Lumpur, Penang or Kota Bharu) without any problem to get a single entry tourist visa. That would stamp you into the country for 60 days and then you could extend that by 30 more days if you wanted to at the immigration office for 1900baht.
The easiest and most trouble free thai consulate in the area is the one in Vientiane because they require no proof of funds, no proof of onward travel and no proof of a hotel booking.
You might as well get all the time you're allotted out of the 90 day single entry Non-O you came in on before you go on a visa run though.
Good Luck.