DDos Him too
you should talk
do you remember the "I will change and take away your ISP" guy?
OT: Possibly the best choice you have might be to call your ISP (you might be able to do this yourself) and format your firewall with protocols to handle excess (shit I cant remember the name i think its called UTP) so that after a certain point the dos attack will just be dropped (again its been awhile since I looked anything up on a DOS but you should do some research yourself).
Call your ISP and ask to change your IP because you keep getting hacked, they have to do it.
if i knew how to ddos i would
Buy DDosing protection , they have that shit.