THAI VISA CENTRE promised to return my passport with visa within 4 days after submittal of documents and application. They delivered it within 72 hours, instead. Whereas, other similar service providers required to perform several actions, the only action I had to do is give my documents to a messenger and pay the fee. Their courtesy, helpfullness, compassion, speed of response and excellence in professionalism is higher than 5 star. I never got such a quality service in Thailand