First USA NA is a credit company. They sometimes purchase debt from other creditors and then try to collect on the debt. If you received a credit card and have a collection they might be reviewing your credit to locate you. This is just one possibility that happens frequently. Their contact info is:
FIRST USA BANK 900 N MARKET ST, WILMINGTON DE 19801-3030 302-594-4000
FIRST USA BANK 900 N MARKET ST, WILMINGTON DE 19801 800-955-9900
FIRST USA BANK N A 1001 JEFFERSON PLAZA, WILMINGTON, DE 19701 800-955-9900
If you need help with resolving debts with them we regularly negotiate and settle debts to 50-60% of the balance. Go to www.CreditCleaners.Net
Best wishes to you.