One of our customers make an order that costs 1,655,000 IRT with online payment, then Magento redirect him to the bank page, but on bank page he paid just 1000 IRT and the banking website accepts his payment and gave him transaction number! In summary: he paid 1000 IRT but we saw 1,655,000 IRT in Magento backend! How to find out where is the problem? Thanks in advance. PS: The Bank page doesn't let the customer change the payment amount.