My EH has dragged me and our DC through the courts to get a contact order so that he can see them and currently he has them 1 in every 2 weekends, however he keeps cancelling their visits and rearranging them at the last minute (ie on a Friday afternoon) as he says that he and he new wife have things come up like their new baby being ill or having to look after his MIL as she is unwell. Can he be seen to be in breach of the contact order or will I be blamed if I stop our DC going as they are being messed around so much?