Almost half of all broadband customers would look for a new ISP if contacted over their bandwidth consumption.
Research from ISPreview has revealed that 45.5 per cent of broadband users would switch if approached over their downloading habits.
A further 41.1 per cent said they would "maybe" consider switching broadband providers, with just 13.4 per cent suggesting that they would stay with the same ISP.
However, the survey found that 74.8 per cent of broadband customers have never been warned over their bandwidth or data consumption, with 25.1 per cent stating that they have been rapped for reaching maximum limits.
Commenting on the research, ISPreview suggested that promoting unlimited downloads and encouraging customers to spend more time online is part of the problem.
"Broadband is a best efforts (shared) service that rarely plays well when an 'all you can eat' mentality is encouraged. Some will also employ traffic management policies in the small print, which aside from sometimes being hard to find, can also confuse unfamiliar users," the statement added.
Andrew Ellison, personal finance editor at the Times, recently reminded "heavy internet users" to check the download limits on broadband bundles when looking for a new deal.