There was a recent post by Leanne Smith titled choose your words wisely Take a few minutes to read it.
Words do make a difference, how they sound, how they are delivered, and how they are perceived. There are times when we get a request that we have no interest. Especially when busy, we may be tempted to turn it down say something like: Not interested, leave me alone, remove my name from your email, delete my number, or you fill in the blank.
Here is another response that may sound better in a text or email.