what is the best way to keep track of talk with Customer Service Agents of Credit Card Companies ?

Answer 1

Keep a written log of when you called (date and time), who you spoke with, what department they work in, and what extension they can be reached at. Also keep notes of important aspects of the conversation. If you are trying to resolve a specific issue, you might be able to request a reference number so that you can call and ask for a status on your issue in the future.