AMAZON POSTAGE SYSEM MESS UP

Is anyone experiencing a problem with postage?

MY template set postage is reflected in my inventory price when I look it up- I have a set price

Yet orders are coming through with a totally random postage that the customers think is a bargain and that Amazpn have failed all day to resolve. PLUS amazon has set all my post to NEXT day when normally we price for 3 days