@barryturnbull -- How did you try to contact us? I see a thread from about a week ago that confirmed your issue was related to the IWF/TalkTalk issue. If you have contact information for someone at that level at TalkTalk, I can happily pass it along to our senior systems and legal folks. I'll send you an e-mail in a few moments.
As soon as a suspected site is reported to us, we take action on report (typically within a day). During the last episode, our understanding from the IWF was that they don't actively block sites themselves, but pass sites that are potentially at issue to the ISPs. The ISPs can block (or not) the site based on how they would like. It appears that TalkTalk is blocking at the IP level instead of at the domain level (e.g. instead of blocking randomsite.wordpress.com, it blocks the IP addresses used to reach WordPress.com's servers).
In this case, as of Nov 27th, IWF reported to us that "there is nothing on WordPress on the IWF list at present".
I hear your frustration and share it. I wish we could wave a wand and fix everything. We'll keep this thread updated as we know more.