A month ago I entered Cambodia from Thailand at Koh Kong and was charged an extra USD $7 which is commonly considered to be a scam on the Internet. Koh Kong is considered to be less scammy that the big crossing at Poipet but still fairly scammy.
Yesterday I tried to exit back to Thailand at one of the small border crossings near Battambang that has a good reputation for not having scams. It was the second last day of my visa so I was sure everything was fine. But the officers told me I was missing a stamp on my entry/exit form. I knew I got my entry stamp in may passport because I checked that immediately. But I didn't know I should also check the form.
I tried to get back to Koh Kong before my visa ran out but the distance was too great. I should make it by lunch time tomorrow, one day over.
Could this be another scam that people know of? That they leave off the stamp purposefully knowing the the visitor will get sent back to their crossing and likely now be overstaying? Are they likely to try to charge me more than the official 1-day overstay fee? Are they likely to waive the overstay fee due to the missing stamp being their own mistake? How much should the fee be in 2019?