Hi Jodie, that app sounds like just the thing I am looking for. Whats it called?
It's for Android smart phones.
Go into the google play store and search for "Extreme call blocker" It's by GreyThinker.
Or of course just google:
"Extreme call blocker" GreyThinker.It cost ?3.96.
The app maker responds to messages and assists with any issues.
There are a lot of free call blockers; I tried about 5 or 6 before going for this one,
as it works well and they are continually developing it adding new features.
Basically it just works, and if you desire, you have a depth of functionality.
I found it to be well worth paying for.