Citibank Credit Card Complaint

Citibank Credit card department,

Credit line increase/decrease New York

I received a notice from Citibank , NA on - - indicating my credit limit would be reduced on my Sears Card since it had been dormant with no balance for 21 months. The notice stated if I made a transaction by the end of - I could avoid the limit reduction. I consider this a form of extortion forcing me to use the card or risk a negative report of my credit report as a result of Citibank reducing the credit limit. I did us the card on - and paid it off on -. Citibank continues to threaten me with a line reduction and reported account dormancy to - on -/-/16.