Cold Calls.

Instead of putting in your own mobile or landline phone number and potentially opening yourself up to a raft of cold callers, instead simply enter the number 0333 88 88 88 88.
Read more: http://www.thisismoney.co.uk/money/bills/article-3362139/How-annoy-cold-callers-phone-number-use-back.html#ixzz3uXghI3MN
Follow us: @MailOnline on Twitter | DailyMail on Facebook