Info only - visited Chiang Mai immigration yesterday for a multiple re-entry permit. Downloaded a form and completed, had all the relevant copies needed. After waiting for a ticket was told you have to complete their form not online one. Completed their form, exactly the same information. They checked the paperwork, all good and issued a ticket. After waiting 2 hours had to leave for another appointment, still about 1 hour to wait.
Visited again this morning, after waiting 2 hours was issued a ticket, same paperwork as yesterday. Waited another hour for my turn. Happy to beat the 12 o'clock lunch break by 5 minutes. They took my photo and 3,800 baht after I had signed each page, was then advised they wouldn't issue the permit because I live in Tak province not Chiang Mai. Was given my money back and told to go to Tak immigration in Mae Sot.
Hope this doesn't happen to anyone else.
TLDR : Answer Summary
The user shared their experience obtaining a multiple re-entry permit at Chiang Mai immigration, detailing difficulties with required paperwork and being directed to Tak immigration despite having all necessary documentation. Comments reflect other expats' frustrations and tips related to similar issues.