"what is the process to escalate this "

Short of a civil/criminal sanction, nothing.

RIPE and the other international equivalents flatly reject a role in policing the internet, on the basis that it would cost them too much money (resulting in the internet being the shit hole that it is today) and secondly, as was stated here a while ago: because not everybody can agree that a rule should exist, then there should be no rules what so ever.

-------- Original Message --------
Subject: Re: [anti-abuse-wg] [policy-announce] 2017-02 Review Phase
(Regular abuse-c Validation)
From: Thomas Hungenberg <th@cert-bund.de>
Date: Sat, January 20, 2018 2:44 am
To: anti-abuse-wg@ripe.net

On 19.01.2018 13:08, Marco Schmidt wrote:
> The way that abuse reports are handled by the receiving party is
> usually defined by the internal procedures of the providers and not by RIPE
> Policies.

If the abuse-mailbox is valid but the resource holder constantly ignores
abuse complaints sent to this mailbox for a longer time (no response,
no action taken, phishing sites or botnet c2s etc. not taken down) -
what is the process to escalate this (probably finally leading to the
resource being withdrawn)?

- Thomas

CERT-Bund Incident Response & Malware Analysis Team