Totalise has thrown off 900 Net users from its Ultimate Surf 24/7 unmetered service claiming they've abused the service.

The cull - a third of all users on this particular tariff - comes into force on Saturday less than six months after the service was launched.

However, this is yet further evidence of ISPs getting their sums wrong and getting customers to pay for the mistakes.

In a statement, Peter Gregory, CEO of Totalise, said: "Because of the state of the ISP industry it is not financially viable to carry on offering this service to some of the users and as a business, we have had to make the unfortunate decision to cancel the service to them.

"The majority of our users will still be able to carry on using The Ultimate Surf as they have been and we apologise to those affected users that we cannot continue to offer this service."

This will come as small comfort to those who paid £235 for two years' access. The tariff has been available only since August last year.

Totalise is not the first ISP to kick financially unviable users off its service. Breathe and Le Freeswerve are famous for it. ®