I was there in 2010 and used a guy in Phnom Penh who worked out very well. I would not call him a “fixer” I suppose, but he was a very useful tuk-tuk driver whom guided me all over the city for multiple days, had answers to everything and could make stuff happen (basically an unofficial fixer)… He’s reliable, friendly and cheap.
He also has a brother whom I used in Siem Reap who was also very helpful.
Give him a call. Mr. Sandboon spoke English well enough so I had no issues. Mr. Hak’s english not as good, yet It did not seem to be a problem as far as getting me to new and interesting places, etc. (could be an issue over the phone however without the aid of pointing and gesture).. Only way to find out is to call.
“Mr. Sanboon” in Siam Riep 097 7744 820
“Mr. Hak” in Phanom Penh 012 903370
011 – US exit code; must be dialed first for all international calls made from the USA or Canada
855 – Country Code for Cambodia
area code – 2 digit area codes
phone number – 6 digits
US to Cambodia international dialing format : 011 + 855 + ?? + ?? ?? ??
If you contact either of them. Let them know that “Mr. Gene” from America (Colorado) sent you (Mr. Gene and “Ms. Pan” from Thailand). I don’t know if they remember me or not, but maybe it will help me next time I go there and use them. Plus I’m sure they like to hear that they have been referred by previous customers.