Want to kill them

Hi There, I want to know if anyone out there can help me. I have a firewall installed on my machine, It is Zonelabs, Zone Alarm Pro, it alerts me whenever it blocks an attempted intrusion. What I want is someway I can tell the persistent person scanning my ports to &*^@ off. Is there a way I can let them know that they should leave my machine alone.

Also can I be completely sure that they are not hacking my machine, I mean surely someone could still throw some water at my firewall and get by, or is this not possible. I installed Zonealarm about 4 weeks ago and it has already stopped 6535 intrusions.

I am getting really irritated and want to fight back against these &#&^@#@, I want to know if there is some sort of software I can use to send them a message. Zonealarm send's me the IP address of the person hacking me. I have also asked the ISP of the addresses concerned and they have said they can't help me.

Could someone here please help.

Regards
Judge