Discover Credit Card Complaint

Discover Credit card department,

APR or interest rate Illinois

To whom it may concern, I have been charged a late payment APR by Discover for the last few years because of missing one payment -/-/-. Based on the Credit Card Act of -/-/-, I believe this has been done unfairly and in a manner that is against the law. To my knowledge, I demonstrated six months of consecutive on-time payments, but did not see m y original rate restored. In addition, I 'm not even sure I was the full 60 days late required to even trigger the default rate. I have repeatedly contacted Discover about this and they have told me that they will not lower my interexst rate and have been generally unhelpful in addressing my situation.