20th July 2010,
120, Pal road,
This is in reference to purchase order [order number] on the date [Date] received. We would like to bring it to your notice that there is an unexpected shipment delay from our overseas suppliers due to which we are unable to process with your order.
We have started using new material for your order to improve the overall quality of our products. Also, additional staff has already been hired to fasten the production. We assure you the delivery of your order by the end of this week.
We would again like to apologize and assure you that these mistakes would not be repeated in future anytime. Thank you for your cooperation. Should you require any further assistance, do not hesitate to contact us.