first time used agent for marriage and retirement managed to do it all at same time .but did involve going to thai embassy two times..only seen the agent once . Sent passport . Back about three weeks later . Then went to local office in phon phisia. And got married .
I having found that problem .Once I done mine last year with the agent. That was the end. Just renewed it myself last week for another year. Little bit of effort getting all the paperwork together. But was in immigration for approx one hour all done and sorted