“I am writing to let you know how much we appreciate your service.
It is of utmost importance that any calls which may come in when we are unavailable are handled professionally, accurately and in a timely manner. If for any reason we may have a question regarding a particular call, your staff has always been courteous and helpful in assisting us with our needs.
I hope that any suggestions or comments I have made on behalf of this practice have been helpful to you and/or your staff.
Keep up the excellent work!”