Just tell the company representative that you want to “revoke consent,” and if that doesn't stop them, contact customer service and tell them that you don't consent to receive calls and want your number added to the company's “do not call” list, the center says.
Android has a similar setting that allows you to block calls from private or unidentified numbers, although you will still receive calls from numbers that aren't stored in your contact list.
But it also warns that while having your number on the registry will cut down on unwanted sales calls, it won’t stop scammers from making illegal calls.
The FTC says there are some exemptions, including political calls, calls from non-profit groups and charities, and legitimate survey groups that aren't selling anything.
The scourge of unwanted phone calls has been branded an epidemic by consumer groups, while the Federal Communications Commission says it's the top consumer complaint.
