Chase Visa Card 2.99,3.99, and 4.99% for the life of the loan. Now I get an extra $10/mo finance charge for having a balance plus. Palatine Illinois

For quite a few years now I have had a Visa Credit card with Chase. I have good credit and pay my bills on time. I never used the card for purchases as the credit line was higher than others I have. I used it exclusively to take advantage of their promotional offerings of low interest rates "for the life of the loan" --transferring money from higher rate cards when my balance was low enough to warrant it. When there was a problem, it was always taken care of promptly.

Suddenly I recently received NOTICE that I would be billed $10 each month that I had a balance on the card. This is listed as a finance charge on my statement. They also increased my monthly minimum payment more than double - or 5% of the balance. Before, I paid more than the minimum amount due but never what they want now.

Because I only have the promotional amounts on my bill and no purchases, I am being charged more than the promised interest when they add on the $10.
Seems like a breech of contract. I have to pay them or they up my rates or I lose the promotional rate.

I dont have any rate over 4.99% and over 1/2 is below that. My billing statement says I am now paying an Effective Annual Rate of 5.74%. It's still below what other cards are but not what I signed up for.

Wary but wiser
Lincoln, Nebraska
U.S.A.