If it's been approved and the automated system has confirmed it, it should provide you with some general information about the card, such as the available credit, APR and whatnot.
The automated system does provide the option to speak with an agent as well. So, by the sounds of it, the card will be arriving to you soon.
ETA - I would try this number 1-800-436-7927. Just follow the prompts under Application Status.