C.R.S. § 5-16-106

(1) A debt collector or collection agency shall 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, including, but not limited to, the following conduct: (a) The use or threat of use of violence or other criminal means to harm the physical person, reputation, or property of any person; (b) The use of obscene or profane language or language the natural consequence of which is to abuse the hearer or reader; (c) The publication of a list of consumers who allegedly refuse to pay debts, except to a consumer reporting agency or to persons meeting the requirements of 15 U.S.C. sec. 1681 b (a)(3) and section 5-18-104 (1)(c); (d) The advertisement for sale of any debt to coerce payment of the debt or agreeing to do so for the purpose of solicitation of claims; (e) Causing a telephone to ring or engaging any person in telephone conversation repeatedly or continuously with intent to annoy, abuse, or harass any person at the called number; (f) Except as provided in section 5-16-104 , the placement of telephone calls without meaningful disclosure of the caller’s identity within the first sixty seconds after the other party to the call is identified as the debtor.