15 U.S. Code § 1692d. Harassment or abuse
A debt collector may not engage in any conduct the natural consequence of which is to harass, oppress, or abuse any person in connection with the collection of a debt. Without limiting the general application of the foregoing, the following conduct is a violation of this section:
The use of obscene or profane language or language the natural consequence of which is to abuse the hearer or reader.
References in Text
 See References in Text note below.