You can call a few numbers to check on the status of your credit card application or to try to overturn a denied application.
Reconsideration (Personal): 888-270-2127
Reconsideration (Business): 800-453-9719
Customer Service (Personal): 800-432-3117
Customer Service (Business): 888-269-8690
Check Application Status (Personal): 888-338-2586
Check Application Status (Business): 800-453-9719