I assume you mean the O-A Retirement visas and their onerous requirements like the Police report and medical certificate? Where I am, it would take 4 months just to satisfy their terms on the police report. Go to police station and give prints and apply, wait, pickup and take to Notary public for translation, wait, pick up and take to Ministry of Consular affairs for authentification, wait, pickup and take to Thai Embassy for their Authentification. Wait again. 4 months estimated total.
Here is a little secret: take a look at their webpage and on the bottom right corner you will see something like "for Thai" and there will be a phone number written in Thai numerals or Thai script. Copy that number, go to google translate and then call that particular number. They will answer, thinking it is a Thai citizen. Then continue from there......