Serious debt collectors. They do go to court if they have a solid agreement from a creditor in writing. They do (according to court cases) send out letters to debtors. Nevertheless any abusive behavior on the part of their employees should be reported to:
http://www.consumer.ftc.gov/articles/0149-debt-collection (Threatening criminal prosecution to collect a civil debt is a clear violation of the Federal Fair Debt Collection Act)
Also contact your local attorney general
________________________
Apparently a DBA of Kubler Corporation
Records of the Secretary of State of California:
Entity Name: KUBLER CORPORATION
Entity Number: C1566677
Date Filed: 03/16/1990
Status: ACTIVE
Jurisdiction: CALIFORNIA
Entity Address: 7373 UNIVERSITY AVE STE 209
Entity City, State, Zip: LA MESA CA 91942
Agent for Service of Process: PAUL KUBLER
Agent Address: 7373 UNIVERSITY AVE STE 209
Agent City, State, Zip: LA MESA CA 91942
_____________________
BBB:
BBB ACCREDITED BUSINESS SINCE 11/3/1995
Alternative Recovery Management
Phone: (619) 469-6194
Fax: (619) 469-9956
7373 University Ave #209, La Mesa, CA 91942
BBB® Accredited Business Seal BBB® A- Rating
On a scale of A+ to F
I did not answer, but a search for the number finds many records for Alternative Recovery Management. This is confirmed by the company's page: http://www.alternativerecoverys.com/?page_id=14
Know your rights under the Fair Debt Collection Practices Act (FDCPA): http://www.ftc.gov/bcp/edu/pubs/consumer/credit/cre18.shtm