GDI, source of needless posts to mailing lists and forums alike does nothing to punish spammers. Using a SIP toll free gateway you along with thousands of others can cost this spammer time (money) and money (phone bill). Free toll free termination providers
DO NOT motivate spammer’s from your own phone.. as this is a tollfree number they likely have caller ANI. But a SIP call they cannot trace.. that and it’s not illegal to call and not-listen to their extensive message on a daily basis.
burn some GDI cash today
if only it were this easy to burn other spammers