Formulating a Block Business Letter

Block Business Letter
NAME:
INSTITUTION:
Keller Kolberg
North California
Drawings Advocacy
New York
28th August 2021
Dear Mr. Kolberg:
REF: REGRET
Hi Keller, thank you so much for sending across your proposal for delivering services to us. The company appreciates you for your patience as it took quite a long to review your proposal. While examining your proposal, we found it well presented and interesting. You've put much effort and more time into your detailed proposal, which is commendable. Our firm finds it fair enough to write this letter to give you a way forward rather than have you wait for a long maybe.
However, it's quite unfortunate that we have to pass as the key strengths in your firm ...