the majority of the answers are all the same, he gives aggressive messages back.. if he wants to do it himself that's his choice... quite honestly I couldn't careless.
But don't ask a question if you don't like the responses....
it seems you have asked a question on this site but whatever answers are given you are quite aggressive with your responses and constantly say you want to do it yourself.
20,000baht is not expensive for a lawer to help with your isssue..
If you don't want to use a lawyer then don't, keep going to immigration with your papers, you never know someone might feel sorry for you and do as you ask, but be prepared to wait a long time for that one helpful person. Other than that why not get your Thaingirlfriend to go with you to have it explained properly as to what needs doing...