i did call and I was told no reason has been given by the officer who rejected. They told me that for LTR visa they are not bound to give out information as it is all in the system. its been very frustrating.
The ask:thailand community, consisting of multiple Q/A groups with over 100,000 members, powers this platform. It is not an official government resource. Our members actively contribute to this resource, and while we strive for accuracy, we cannot guarantee its complete reliability. Assistance to travelers is provided as a community service.