Many consumers feel confused by "undecipherable" TV, phone and broadband deals, it has been claimed.
A third of people surveyed by the University of Reading, the Post Office and Freeview said they were not satisfied with their current broadband package.
However, almost half said they were put off switching providers because they could not work out the best alternative.
One in ten among those questioned abandoned switching all together as they found the process too complicated.
Some 72 per cent of people said they experienced difficulty understanding the small print in their broadband contract.
And 42 per cent found themselves receiving higher bills than they were expecting.
Over a third (39 per cent) said they rarely watch any of the TV channels they pay for, while nearly half of respondents (47 per cent) did not know how long their current agreement lasts.
Professor Alison Black, from the University of Reading's Department of Typography & Graphic Communication, explained that bundle deal advertising was studied across a range of broadband providers for the research.
"Many advertise six-month offers but tie you in to 12 to 24-month long contracts," she noted.
"Whilst this is a completely legal practice and something that is replicated across advertising for many other products, it's easy to see how people find themselves unsure of what their bundle includes."