Before diving into the benefits of a professional service, it is important to understand the local context. The (located on Phetkasem Road near the Blue Port shopping mall) serves a massive area, including Prachuap Khiri Khan and neighboring provinces. During high season (November to March), the office is notoriously overwhelmed.
Do your due diligence. Visit the physical office. Ask to speak to a current foreign client. And never, ever pay for a visa that doesn't require your physical presence. With the right agent by your side, Thailand's famous bureaucracy becomes a minor footnote in your tropical dream.
"I will stand with you at the counter," Tum said, tapping his pen on the desk. "When the officer asks a question in Thai, I answer. You just stand there and smile. You drink your coffee."