Facebook trying to persuade advertisers to abandon their boycott. So far, they aren’t impressed.

But advertisers and the agencies they work with say they are still negotiating. And they say they are so far unimpressed with promises to better police hate speech, including labeling some politicians’ posts when they break the company’s policies. On Tuesday, when the civil rights groups that organized the efforts expect to sit down with chief executive Mark Zuckerberg, they plan to push for a rash of changes, including adding a C-suite-level executive dedicated to ensuring that the company’s policies don’t contribute to racism and radicalization.

More than 750 companies including Coca-Cola, Hershey and Unilever have already temporarily paused their advertising on Facebook and its subsidiary Instagram. More companies have joined the movement every day, with recent additions including Walgreens, Best Buy, Ford and Adidas. More than 200 advertisers joined in the past 24 hours.

Kerri Pollard, senior vice president of the membership platform Patreon — which is pulling all of its ads from Facebook and Instagram — said that the recent string of concessions still did little to address the company’s core concern: Zuckerberg’s characterization of free speech. The Facebook CEO has said he believes that social platforms should not fact-check politicians.