Dear X, Regarding your comment during our recent phone conversation. In this conversation I said something like: “I must have missed the update.” And you replied with: “That happens a lot at [my department].” I find your comment to be extremely unprofessional, and more than that, to be unnecessary and uncivil. The whole point of sending out the final confirmation is as a double check, last chance error correction process. The issue of the wrong room having been listed was very minor and corrected completely within the space of the short phone conversation. Why was it necessary to take such a cheap shot at me personally and [my department] as a whole? Your comment was inflammatory, and divisive. Do you suffer the self-delusion that you and your department have never made any errors? Please refrain from such bullying tactics in future. Kind regards.