You can ask to have your rate lowered. Some companies will do this for a short period (usually 6 months). Some won't even consider it.
There are a couple of ways to reduce your burden, but it all takes time (unless you win the lotto). If you have equity in your home, you could take out a loan and pay off your credit card debt. You will still owe the same amount, however your payments will be consolidated (thus lower) and your interest rate will be lower. Word of warning! If you do this, close your credit card accounts. If you start using them again, you will be in worse shape than you were before.
I have no idea what your situation is, but I've known several people who have used services such as Consumer Credit Counseling. They contact the people you owe and make arrangements for you to pay lower amounts. You actually pay the service and they pay the other companies. Some of the companies will actually wave all interest if you work through a service such as Consumer Credit Counseling. There is no fee for working with CCCS. In order to use this service, you have to surrender all of your credit cards. It will take awhile, but I've seen several people pull themselves out of a real mess.
Whatever your need, I hope things work out!