This sample cease and desist letter to a collection agency for California is sent pursuant to the Federal Fair Debt Collections Practices Act, 15 U.S.C. Sections 1692c and 1692k, and by the Rosenthal Collection Practices Act, California Civil Code Section 1788.17. The sample requests that the collection agency immediately cease and desist all telephone calls to either the place of employment or the home of the alleged debtor and further states that any violations may result in legal action. The sample can be modified for use in any State in the United States of America. The author is an entrepreneur and freelance paralegal who has worked in California and Federal litigation since 1995 and has created over 250 sample legal documents for sale.