A new report by Freeview, HomePhone and Broadband suggests that people are being offered deals, only to have the full extent of the terms and conditions clicks away from the original offer page.
Deals such as '6 months half price' capture customers attention to sign up, but without properly reviewing the small print, some are left paying more than first thought.
The study also suggests that nearly half of consumers find themselves with far higher bills than they were expecting.
Aside from cost, length of contract and exactly what the deal includes has also left customers in the dark.
Over a third said they rarely watch any of the TV channels they pay for and over half of respondents don't know how long their current agreement lasts.