How to get scammed
When you answer such calls, you are making it known that it is an active number, and that you will answer unknown callers. This could place you on a target list, or even have your number sold to scammers.
One new reason to not answer such calls, is that your voice can be recorded and synthesized to make scam calls to obtain money from people that know you.
Below are the things that you should never post on a public website such as this:
1. A photo of yourself.
2. Your email address.
3. Your phone number.
4. That you are on holiday, this especially applies to Facebook.
5. Date of birth on Facebook