If you want complain to any company about a promotion, complain to the company itself, not the promotional company handling the promotion. You are making them aware of a issue that they may not have known about. Promotional companies do not always share negative feedback with the big company that hired them. So, ... Consider emailing cocacola Canada directly. I have done this in the past with another company after a horrible response from promo company handling their contest AND got a surprising great result.