Translate the following letter into Chinese. Complain about Late DeliveryDear Sirs, We regret to have to complain about late delivery of the filing cabinets ordered on 2nd July. We did not receive them until this morning though you had guaranteed delivery within a week. It was on this understanding that we placed the order. Unfortunately, there have been similar delays on several previous occasions and their increasing frequency in recent months compels us to say that business between us cannot be continued under conditions such as these. We have felt it necessary to make our feelings known since we cannot give reliable delivery date to our customers unless we can count on undertakings given by our suppliers. We hope you will understand how we are placed and that from now on we can rely upon punctual completion of our orders.Yours faithfully