Report Scam Calls

I ve been facing an issue with a particular scammer and I want to report them, how can I go about it?

Report telephone scams online to the Federal Trade Commission. You can also call 1-877-382-4357 (TTY: 1-866-653-4261). The FTC is the primary government agency that collects scam complaints. Report all robocalls and unwanted telemarketing calls to the Do Not Call Registry
Link- Common Scams and Frauds | USAGov.