If you believe you have been called by a telemarketer in violation of the Do Not Call law, file a complaint with the Federal Trade Commission.
File your on-line complaint with the FTC or call in your complaint at 1-888-382-1222 (same as registration toll-free number). For hearing impaired, the TTY complaint line is 1 - 866 - 290 - 4236.
You will need to furnish in your complaint the name of the company calling and/or telephone number of the company that called and the date of the call. Without the information, possible violations cannot be investigated.