A family found out they couldn't buy their dream home because of a minor phone bill they were never told about, therefore it was never paid, eventually denying them a mortgage and losing the home they always wanted...more details below.

http://www.dailymail.co.uk/money/mortgageshome/article-3641716/How-tiny-errors-credit-file-cost-dream-home-24-mistake-mobile-bill-bungled-energy-bill-meant-family-couldn-t-mortgage.html