PikTV doesn't have any free device offers. It's a low cost TV service.
The free 55" TV is part of an Optik TV and internet bundle on a two year contract. If you do actually have Optik TV and that bundle, you'll need to contact Telus directly to ask about the TV. It usually would have been part of the discussion when setting up that bundle.
As I mentioned before, you'll need to contact Telus directly. Most of us on the forums are just Telus customers.