Why is google ignoring my sitelinks demotions?

[Hakkasan]

I'm referring to the sitelinks that appear in the SERPs when searching for my brand name. 6 subpages come up- some found in my main navigation, some not. 3 of the 6 sitelinks have been demoted in Webmaster Tools under "Site Configuration > Sitelinks."

I realize that they say in their instructions: "Google doesn't guarantee that demoted URLs will never appear as a sitelink, but we do consider a demotion a strong hint that we'll try to honor when generating sitelinks." I am just surprised they would ignore 3 of the demotions and for so long. The pages that are demoted do not have very many internal links pointing to them (unlike other pages of my site that are targeted specifically). Also, the site has tens of thousands of pages to choose from.

Why are they ignoring my request? What else can I do to fix this?

[NakulGoyal]

It sounds like it's been a while since you demoted those pages. I think this sounds more like a bug that it's not happening. You could go to the Google Webmaster Forum and submit a request there or if it's urgent and the following solution is doable, you could try blocking those 3 pages via a noindex tag or via robots.txt and see if they get removed that way. Once the pages have been removed using that technique, you could remove the noindex tags or disallows in robots.txt unless you would prefer to keep it that way and you don't want those 3 pages to show up anywhere...period. I hope that helps.