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The cold call firms bringing misery - by claiming to block cold calls - Andrew Penman - Mirror Online
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Telephone Preference Service: The free app that lets you block all nuisance calls | The Independent | The Independent
Cold call blocking firm fined £75k for 'aggressive' nuisance calls
Cold Calling Company Fined for Marketing Products Designed to Block Cold Calls - Contact-Centres.com
Call blocking firm fined for making cold calls itself - BBC News
How to block nuisance calls | Nuisance calls | The Guardian
Mastering the Blocking and Tackling of Cold Calling - Cold Call Coach
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How to stop nuisance calls - here's how to block and report annoying cold callers | The Sun