Cadbury experienced a worm contamination issue in some of its chocolate bars in 2003. This led to plummeting sales, reduced retailer cooperation, and damaged employee morale and company credibility. An investigation found the problem originated in distribution centers. Cadbury took responsibility and introduced a new double packaging and enlisted Amitabh Bachchan as brand ambassador to regain trust. Through integrated communication efforts across TV, print, and social media addressing consumer and retailer concerns, Cadbury was able to restore sales growth within two years.