Citibank Credit Card Complaint

Citibank Credit card department,

Customer service / Customer relations Pennsylvania

CitiBank recently closed - credit card accounts sending me a letter saying " we are not a fit '' because I did not use the accounts. My - score is -. Today I applied for a Citi Advantage Card, and was denied.Why is Citi shutting down my credit when my score is the highest it has ever been, and my debt is the lowest it has ever been? I am obviously a good credit, and I worked for the bank for over 5 years!