Robo-calls is pretty simple and inexpensive to set up and run. Nowadays most of the telemarketers use this system for advertising to grow their business. For doing this, you will have to connect your computer to a modem and run a program that select and dial numbers from a program.
These are the ways to stop getting spam phone calls:-
1. If you are constantly receiving phone calls, it's important to know the details of the caller. You can easily get details with the help of reverse phone lookup service.
2. Block spam phone numbers:- There are lots of application or services that are available through which you can block spam number.
3. Don't respond to the spam number.
Read more tips to prevent spam call: https://www.reverseafrica.com/