Capital One Settlement

A few month ago Capital One raised my interest rate. Because of the hike in the rate, I could no longer afford the monthly payment. I contacted them and they have me making lower payments, however, they are unwilling to do anything about lowering the rate and they continue to report me as deliquent in payment. I have another card that I was able to arrange with them a monthly amount and they reduced my interest rate to help me pay-off my card. Has anyone had luck with Capital One? I just keep getting further in the hole with them and I am trying to take care of this myself.