Hang up and report it to the Federal Trade Commission at complaints.donotcall.gov or 1-888-382-1222. If you’re getting repeated calls from the same number, you might want to ask your service provider to block the number; for calls from different numbers, ask if they offer a service to block unwanted calls.
Herein, how do you keep telemarketers from calling your cell phone?
The Do Not Call Registry accepts registrations from both cell phones and land lines. To register by telephone, call 1-888-382-1222 (TTY: 1-866-290-4236). You must call from the phone number that you want to register. To register online (donotcall.gov), you will have to respond to a confirmation email.