clueful yahoo abuse contact?

Does anyone have a clueful abuse admin contact at yahoo.com? I have already tried the 'usual methods'. Eg picking up a phone and calling every publically available number for yahoo I can find, and emailing abuse@yahoo.com etc. Attempts via phone result in being blown off, that unless we are a direct yahoo business partner or a customer of purchased yahoo services, they will not talk to me, and that I have to use 'the web' to report abuse originating from yahoo servers and yahoo owned+operated ip space. Reports via 'the web' and email result in clueless (or auto-denybot) responses. -Dan