JPMorgan Chase Credit Card Complaint

JPMorgan Chase Credit card department,

Credit card protection / Debt protection California

my name is -. I used chase - credit card for around 3 years. last one month, -, my credit card get expired. however, my old credit card still can be charged by authorized merchant. An expired credit card still can be charged money. this is very ridiculous. It happened to me and It happened to chase bank. what is purpose to set up expiration date? it is - of credit card protection or not. Furthermore, I did call - and mention this issue to chase credit card. Their service is very rude and unfriendly. In other words, it is your business, not chase credit card business. I think everyone need to know about this.