New research has suggested that broadband subscribers need to be aware of hidden charges related to their service.
The study by Moneysupermarket.com revealed that an estimated eight million people are being stung by such charges, which add around £44 a year on to their bills.
Paper billing and non-direct debit payments were found to be the most common ways that people were incurring such charges from their internet service providers.
Discussing the findings, James Parker, mobiles and broadband manager at Moneysupermarket.com, called on Ofcom to ensure information related to services is highlighted clearly by companies.
"The fact that almost half of those incurring charges did not realise they formed part of their contract highlights the problem that these charges are hidden away," he added.
Last week, Ofcom gave BT the green light to offer new discounted bundles to its customers.