I wanted to bring to your attention a very common scam when it comes to money exchange. The same thing which happened to me in Kuta, Bali.
I went to a money exchange place and after agreeing on the amount which I was owed the guy behind the counter gave me the money. He counted the money himself first and I counted it myself after he did to make sure we agree on the amount. So far so good. The only issue was that whilst I was counting the money and splitting them in bunches over the counter to make it easier for me to count, he was touching the money and sorting them in different piles for me. Whilst he is doing so, he drops some of the money behind the counter without you realising. I decided to recount the money and the amount was much less, the equivalent of €100 less!! I told him that I did not have the correct amount now. He started making fun of me saying that I am too slow in counting the money and that I counted it more than once. This happened three times, him touching the money after I count it and again finding less than what I am supposed to find.
Then I decided to move away from that place without getting my money exchanged there.