Apparently one agency told me Covid extension is not an option for people like me who holds Chinese passport with 15 days visa on arrival?
To solve this problem she said:
for 15 days on arrival, you have to request letter from your Embassy, and we can assist with 30 days extension for of course huge amount of money.
I am literally drop dead. I only need 4 days more. My visa end on June 4th. I just need 4 days more to match my flight on the 8th. Ughhhh
TLDR : Answer Summary
The user is facing challenges in extending their 15-day visa on arrival in Thailand as a Chinese passport holder. An agency informed them that a COVID extension is not available, and they've been advised to obtain a letter from their embassy to potentially secure a 30-day extension. However, this is complicated by their flight scheduled just four days after their visa expires. Commenters suggest options including paying a fine for overstaying, attempting to get a short extension, and the implications of overstaying which is described as generally acceptable in Thailand despite passport stamp issues.