I suspect you were notified by US Mail. Approximately one month ago, I got a letter from Chase stating that if I did not use a particular long inactive Chase card by a certain date, the account would be closed. I made a charge and the account is still open. I think (my thought), you got a Chase letter as part of the zillions of recent credit card notices that we have all been receiving and you did not open or overlooked the letter. This is my guess.