On December 10 you came and changed money with us with 20$ and exactly Baht amount you should get was 628 Baht. But in fact we gave you only 228 Baht instead of 628 Baht( separated into 1 bill of 100 ฿ Bill(which was recognized to 500 Bill), 2 bills of 50฿ bills, 1 bill of 20฿ and the rest were 8 ฿ coins. After that you informed us-in case of this matter- we had to count our money to check the balance and found that we had got sum of 400 Baht over our balance and you were finally given the correct amount of 628 Baht.