When someone starts hassling my 14 year old daughter with calls and texts I do not take it lightly.
The A&A VoIP system now has a feature to allow blacklisting individual numbers. It will go live soon with a web interface. The behind the scenes bits work now, so if you need this please do ask.
The system allows a number of responses from number unobtainable tone, busy, ringing out, to allowing the call but recording it for evidence and emailing a specific address.