If you're annoyed by robocalls, you're not alone.

The Federal Trade Commission says the top complaints include callers pretending to be a government official or family member, and calls to offer warranties, protection plans, debt relief or computer technical assistance.

Below is a look at some tools that can stop those unwanted calls:

1. Cellphones offer a tool that will allow calls only from numbers in your contact list. The downside is that it also blocks calls from people you may want to talk to, like a doctor or delivery person, who aren't in your contacts.

2. There are also third-party call-blocking apps you can download. Some of these apps charge a fee, and others offer a free subscription. Some "free" apps are free only for an introductory period and will automatically begin charging you a fee unless you cancel your subscription before the free trial ends.

3. Sign up for your cellphone company's separate robocall blocking service to get even more protection.

For links to company-specific information about blocking calls, go to the FCC’s Call Blocking Resources.

4. If you want to block calls on a traditional landline, you can buy and install a call-blocking device. Call-blocking devices are typically small boxes you attach to your phone. Your phone company may also offer call-blocking services.

5. What about the National Do Not Call Registry? The National Do Not Call Registry is designed to stop sales calls from real companies that follow the law. The registry is a list that tells telemarketers what numbers not to call. The FTC does not and cannot block calls. Scammers don’t care if you’re on the registry.