I have a website and I sell International. I remember speaking with a PayPal rep a few years ago, and she had updated the shipping amount, since I use PayPal as a payment method when you check out.
Since it went up again. I need to change the shipping amounts for both Canada and Europe etc.... I remember they said to call and they will change it on their end, and when people check out they will get that charge. I changed it on my site, but when people are checking out they dont get charged the updated amount.
I tried calling and they said they cant help me at this time and hung up. I also tried with an email but they said they cant help me thru the automated system and it will be a few hours. I dont mind waiting, I just cant today. I can later, but I was just making sure that is the only way I can change it.