Sir, I dont have any official proof for you but what I can say is on the month of may 2 of my friends got rejected from Bangkok airport with METV. Reason was Immigration officer was suspicious about them that they do some sort business or wok here. My relative got rejected last month but he was a regular traveler.
You can look for VFS Global website, might help you with something. Or get a loyal visa agent who will help you to get the visa. BUT remember, now a days there are lot of Bangladeshi'es are getting rejected from the Immigration In Bangkok airport even after holding the return ticket, hotel booking, currency endorsement in the passport. Cause ??? You are suspicious !!! So my advice will be wait for the time until the things are getting calm. Cheers !!