# Unknown Numbers Primer > A step-by-step response when an unknown caller keeps contacting a child: document it, block it, report it and talk with your child. ## Guides - [Documenting Repeated Calls for Your Carrier or Police](https://unknown-numbers.pages.dev/document-unwanted-calls-evidence/): To document unwanted calls evidence, keep an organised record of each call, preserve relevant voicemails and messages, and ask your child what happened without. - [Blocking Numbers on Android and iPhone](https://unknown-numbers.pages.dev/block-number-android-iphone-child/): To block number android iphone child phones, use the phone's built-in call history or contact controls and check the relevant operating system's current. - [Spam Callers vs Someone Targeting Your Child](https://unknown-numbers.pages.dev/spam-call-vs-harassment-child/): A spam call vs harassment child assessment should consider the caller's behaviour, the frequency of contact, the content of conversations and whether the child. - [What to Tell a Child Who Is Frightened by Calls](https://unknown-numbers.pages.dev/reassure-child-unwanted-calls/): To reassure child unwanted calls, listen calmly, acknowledge their fear and make it clear that they are not responsible for the caller's behaviour. - [Reporting Unwanted Calls to Authorities](https://unknown-numbers.pages.dev/report-harassing-calls-authorities/): To report harassing calls authorities need a clear account of what happened, when the contact occurred and why it caused concern. ## About - [About Unknown Numbers Primer](https://unknown-numbers.pages.dev/about/): responsible use, how the site is funded and how guides are made ## Optional - [RSS feed](https://unknown-numbers.pages.dev/feed.xml)