The issue has been reported to affect some of the Cadbury Dairy Milk Advent Calendars, the Cadbury Heroes Advent Calendars and Cadbury Dairy Milk Santa’s Workshop Advent Calendars.
Various consumers have expressed their anger at the error in the run-up to the festive season, according to widespread reports.
A spokeswoman for Cadbury urged people who had been sold one of these items to contact the firm immediately.
“We’re sorry to hear about the issues some of our fans are facing with chocolate missing from inside the Cadbury Dairy Milk Advent Calendar, the Cadbury Heroes Advent Calendar and Cadbury Dairy Milk Santa’s Workshop Advent Calendar, and would like to reassure people that quality is of paramount importance to us,” she said.
“We encourage any customers who have received an advent calendar that is not up to standard to speak to our customer care team as soon as possible.”
Meanwhile, last month, Mondelēz International recalled batches of its Cadbury’s Dairy Milk Little Robins product after it was revealed that they contained almonds not mentioned on the label.
That was the second food safety scare for the firm this year after Müller UK shut down production of two Cadbury dessert lines in June as a precautionary measure, due to the possible presence of listeria in the products.