Demande de rendez-vous téléphonique

Dear [Mr or Mrs or Sirs],    I have tried several times to be in touch with you on the telephone without success. I expect you must be very busy at this time of the year.    However, I would be very pleased to have the opportunity to discuss with you about [affaire]. [Société] is dealing with [domaine] and we can offer our customers [services or goods] at very competitive prices, as you can see in the enclosed catalogue.    I shall intend to telephone you again on [date] at [heure], in order to arrange a meeting with you. I hope this proposal is agreeable to you and that you will be available to take my call.    With all my thanks in anticipation, I look forward to talking with you.    Yours sincerely  [votre nom]  [votre fonction]