I am facing exactly the same problem now. My total cost is USD1++. My shipping is below USD50 only. Fedex Malaysia decides my shipping is RM379.98 based on an ambiguous 'freight charge schedule', and modifies my total cost to over RM500 and hence declares it as taxable by customs, which is RM2++.

They did not submit the customs declaration with the original invoice but instead uses an invoice with a number which I cannot find on my invoice or anywhere else. I have reasons to believe the customs form they show me is a fabrication and their 'official receipt' from customs is suspect.

I think there is an element of fraud here and it has been going on for a number of years. Is there anyway we can gather victims of their fraud, launch an investigation and a US equivalent of a class action lawsuit?