Citibank Bank Account Or Service Complaint

Citibank Bank account or service department,

Other bank product/service Account opening, closing, or management New York

I have not used my Citibank credit card for a period of time. On -/-/-, I made a purchase with the credit card. This transaction was successful, but any future transactions were declined. When I called the Citibank customer services, I was notified that my Citibank credit card account was closed on the same day. I did not have any overdue balance and did n't get an explanation why the bank closed down my account. I am concerned that the involuntary closure of my credit card account will affect my credit score.