Having used Challenger for our company mobiles for...

Having used Challenger for our company mobiles for a few years, we decided to use them for Broadband. The salesman mis-sold the speed we could receive, which I had in writing and despite numerous attempts to get them to deal with my complaint they have still not done so satisfactorily. When taking out the broadband, they weren't the cheapest option, but they are not willing to accept they are in the wrong - despite accepting the email is misleading. I would have scored a 1 STAR, but the service on the the Mobile phones have been OK prior to this issue.