Internet Solutions Poor service breaks contract

Chase le Roux sold us a 4meg wireless system.i made Chase type a letter to say \if they do install and the service is not viable/fees-able in area,that we will not go ahead with the service and also not pay for the install.almost from day 1 very unhappy with service (have email proof between Chase myself and francois). we have to reboot rooter 3/4 times a day, and after that still doesn't work. they had numerous install teams out to try and figure what the issue is,and Neotell's install team said it was the wrong product for the area.Chase admitted it was the wrong product for the area and Francois wanted to upgrade.adamant that we have a binding contract and we can't get out of it.chase brought an upgrade unit, and again it didn't work,we have been in comms with Francois van Wyk and Michele Kember,Sales manager,receiving the worst client service of our lives.Chase said he was going to dissolve the contract,but received a mail from Francois today to say that \"Your cancellation will be processed for the end of your agreement.If the termination is loaded earlier a termination fee will apply.\" How do we go about this. paying for 10 months for something not working? please help someone"