Unless these are called in, they won't know to fix it. Be sure to collect your Transaction number and if they don't fix it in a reasonable time, ask for a model that works correctly.
When I open up Smart Hub and go the TV icon, there is a screen for the currently selected channel and six smaller screens to the right with other channels. When I select any of the other six channels, the currently selected channel comes up instead of the newly selected channel. I have done the Smart Settings and gone to the TC Setup, and everything, such are set box and provider are all correct. I have also reset the TV. Any help would be appreciated.