Dear :

Thank you for your letter of [date] in regard to the delay of your order No. . We are pleased to inform you that your order will be ready for delivery by [date].

Over the last few months, we have had some problems with the supply of these items. We have contacted the manufacturers and they have informed us that they will meet all our future orders promptly. We will monitor this very carefully as we wish to give our customers the best service possible.

I will inform you as soon as the goods arrive. Enclosed is our new catalogue and price list, which is valid until the end of the year.

Yours sincerely,

[name]

[title]