Hey there , i'd like to hear from your experiences as i'm now facing that problem , and not sure what to do. I submitted a few photos in the " singapore my home - come together" competition and one of them won a prize and was used in postcards and in the booklet given out during ndp. That felt great for a relatively new photographer like me.
However , another photo of mine that i submitted was used too , and on the cover page of the booklet. It's stated in the T&Cs that " The Organiser reserves the right to use the winning and accepted entries for NDP and National Education publicity and marketing purposes, with copyright owners being credited accordingly where appropriate." and through emails , people from photo vivo agreed that it was against the terms for them to use my photo.
Now , they've referred me to someone from saf i think , and he says that the person in charge is in India and he can't do anything. I know that it was probably an honest mistake that my photo was used , but i'm just wondering if there's something that can be done and i'd love to hear what you've done in your cases in the past.