To FIRST LAST,
21 April 2021
We would like to draw to your attention the behaviour of your sales representative SALES.
SALES has been making unsolicited sales call to our [company / home], often at inconvenient and awkward times. [Our staff has been interrupted while having important meetings.] / [Our family has been disturbed often during dinner time and bed time.] We have asked SALES not to call us during these hours, but he / she has repeatedly ignored it.
We hope that you will understand our position and pass the word to [him / her] on not making these unsolicited calls [between the hours of [time]]. [Further actions will be taken if SALES does not cease and desist from making such calls.]