Réclamation pour livraison tardive (annulation éventuelle)

Dear [Mr or Mrs or Sirs], We still have not received the [marchandises] we have ordered you on [date]. This is now overdue, since delivery date agreed was [date], as you will notice it on the enclosed copy of [document]. I would like to draw your attention on the fact that this delay causes us great inconvenience, most of [produits] being purchased by our customers at this time of the year. Therefore, we inform you that if complete delivery is not made by [date], we shall consider this order as cancelled and contact another supplier. We trust you will give this matter your immediate attention and look forward to hearing from you. Yours sincerely [votre nom] [votre fonction]