Paying for NO SERVICE!

We ordered a new service in May but after less than six weeks the device went faulty. We handed the device in and have for the last 4 weeks had no feedback, no replacement, no feedback and no service. We have spent days in the store trying to get this resolved. <br> <br> How can a new business service not qualify for an exchange unit or a loan device. We are paying for a service that we cannot use. Need the billing and the service issues resolved, this is negatively affecting our business<br> <br>