I just got an email from Amazon all in Spanish saying I am being charged $232 for the mexico marketplace and one from Amazon.ca charging me $15 for Canada marketplace. Stating it’s to settle an account balance. I have not sold in either marketplace. 
This is also the first time I’ve received something like this.
That would be a red flag.
Do not click on any links in the message and it is best if you disable remote content from loading.
If it does not show up in your official seller central messages I would reach out to amazon to verify that it is a legitimate message from them. Make sure that you are incontact with the actual amazon company.