<prompt> Human: I was paying off my credit card in full like I always do and always kept it at 10 of 10,000 each month. As I was about to pay my payment I realized that my credit limit dropped to 5000?What happened? Did my credit get damaged? I am confused..  <response>: Credit limits can be reduced by the credit card company at any time without warning. This is one more example of the folly of depending on lines of credit to be there when you really need it. 