For the information of farung located Surin Province. I have lived in Sangkha now since August last year, and use the Imm office at Bak Cheong. And this despite the uninformed and disinformation of some Surin that the Bak Cheong office is now in Surin. It is most definitely being run well by very competent officers. The staff there are extremely helpful and considerate. Just did my extension of stay there - 10th Feb- (45 days before the current one expires 27 March. They offered their own (double-sided version of the penalties acknowledgements (so two fewer pieces of paper in their file). Did not need a map or copy of the household register and without even asking, they gave me a new 90-day receipt so my next online is now the middle of May.
TLDR : Answer Summary
The Bak Cheong Immigration Office in Surin Province is reported to be well-run and efficient, with helpful staff providing excellent service for visa extensions. Users have noted that despite some confusion about its location, the office is accommodating and has streamlined processes, such as providing a double-sided penalties acknowledgment form and not requiring additional documents like maps or household registers.