Home country, so you have time to arrange travel plans and say goodbye to friends and family.
But if you like a short vacation before working in Thailand, both Indonesia and Vietnam are nice for sight seeing. Not sure if you need a visa to visit these countries as anonymous.
I guess the Embassy was correct. How do you think we can advice if we do not know how you applied?
If the nationality at birth does not match, the information given on the refugee travel document and the passport, you have to figure out how to get documents with matching data.
DTV is valid for 5 years and during this validity you get 180 days of stay when you enter Thailand
a Non Immigrant O visa gives once 90 days on entry, you are allowed to work with this visa in combination with the work permit, which can only applied for by a Thai company.
a Non Immigrant B visa only gives once 90 days on entry and can only be obtained in combination with a work permit, which can only applied for by a Thai company.
If you need to work on-line for a company outside Thailand, the DTV is the best option