My payment method was declined

Dear Team,

Please, help. During the last 6 year I'm using my bank card as payment method in App Store. But Today I was surprised that App Store decline the my bank card. Account has more than 1000 USD. I cannot understood what was a problem.

I'm trying to change in different device: Macbook Pro, iPad and other iPhone. On All device I have this problem as payment method declined.

Please, help!!!

Bank name: KAZKOM Bank

Country: Kazakhstan

Many Thanks