Flex Pay-ment charged more

Odd question but, I was charged more to my bank account than my account here says I was. Yesterday I placed two orders, four items in total, and instead of the first Flex Pay I was charged what is supposed to be the remaining payment. It’s a very small amount but it’s still more than is supposed to be charged. If there is anyway to email a photo of my screenshot from my bank statement to back my claim I will no problem. The items were part of the private / secret sale but even the original amount / Flex Pay math doesn’t add up.