There is a lot of history behind this animosity - a bit like Burma and Thailand too. Many neighbouring countries are the same globally- accidents of geography 🙂 🙂
In 2003 the Cambodians rioted and burned down the Thai Embassy in Phnom Penh over some Thai actress claiming Angkor Wat was Thai (She never said it - the storey was planted by Khmer Nationalists). The Thai ambassador had to climb over the wall to escape. :-)
I found LinkedIn and Networking at Chambers of Commerce Networking events best places to look. There are some agents that will work with you but only in certain skill domain and for jobs paying over 250k THB a month. I am basically retired from corporate work now but I still get many Thailand jobs pop up weekly in LinkedIn in my domain ie PMO. There are decent jobs out here from people with the skills and experience. It shoukd also be remembered these days many Thais have the skills too in certain industries and domains.
Yes. People have been posting they got the DTV even after being blacklisted for an overstay. The length of blacklist suggests an overstay of over a year :-)