In FreedomSoft, you have the ability to block calls, preventing numbers of your choice from calling or messaging you. Simply add the respective numbers to the blocked numbers list, as shown below.
Blocking a Number:
1) Hover over your name in the top right of any screen.
2) Click “Settings.”
3) Click "Phone" in the left pane.
4) Select the "Call Blocking" tab from the options at the top.
5) Add any number to the list by clicking the blue button.
See below for a tutorial: