[anti-abuse-wg] Whois database accuracy

Hello, I use to report spam to the spam abuse mailboxes which are defined by the whois database. However, I'm always encountering the below issues: - the mailbox domain isn't valid - the mailbox is full - the mailbox doesn't exist Who can I contact in order to ensure the Whois database is tidied up. I tried to reach the top registry of the domain (-l whois option). However nobody is fixing those reference databases ! Could we possibly disconnect the network which aren't tidying their whois records ? Regards.