Document the offenses. Collect data or documents that support your claim.
Send a formal letter of complaint to the company (see sample below)
Take your documentation and formal letter of complaint to the appropriate department. For your case it would be Telephone sales (telemarketing)
Office of the Attorney General, Department of Justice OR
Direct Marketing Association
Your name
Address
City, State, Zip Code
Date
Mr. (or Ms.) _______________________________ (if you have a contact name)
Company name
Address
City, State, Zip Code
Dear Mr. (or Ms.) ___________________________:
I want to inform you of my dissatisfaction with (name of the product with the serial number, or the service performed). I purchased this item (or service) on (date of purchase) at (location of purchase).
My complaint concerns (the reasons for your complaint). To solve the problem, I would like (state the specific action you desire for satisfaction).
I look forward to your reply and resolution of my complaint and will allow two weeks before referring it to the appropriate consumer agency. If you need to call me, my daytime telephone number is (area code and telephone number).
Thank you for your assistance and cooperation in this matter.
Sincerely,
Your name
Enclosures (Include copies of all related records do not send originals.)