These travel agencies do not care. They just want your cash. You will need a ‘test and go’ package for Bangkok and if you want to go to Phuket go the next day by changing your flight, or buying a new flight. You will also need to get a Thailand pass.
Stephan, immigration never even looked at my certificate. All immigration looked at was passport and TLM6. My other paperwork was checked way before immigration.
Did it not say where you went wrong. Seemingly any new applications supersede previous. So I do not see any point in applying more than once. Saying that, some have had several accepted.