I got an letter from my the boss from my rescue organisation. And it is only 20 to the border. If still can not I pay an agent and I can go back. The agent told me this letter should be okay.
The problem was my rescue ID card was expired. So the letter is about that.
The boss from the rescue organisation in bangkok did called to the immigration they told me this:
I've already spoken with an official. They informed me that you don't have a visa and your Rescue Association card has expired. They don't have any supporting documents, so they need to send you back to your country. If you wish to return to Thailand, the foundation in Buriram Province must issue a valid certification document before you can return.
And yes afther the rejection my rescue did write this document for me. So let's try again at the border by land tomorrow.