Complaint Review: U S Bank

Reward for "Good Behavior". I have maintained several accounts with US bank for approximately 10 years during which I was offered a credit card from their bank. The interest rate was acceptable so I applied for and received the card. I have used the card normally for years, never over the limit, always paid more than the minimum amount due and never a refused payment. The end of last year I received a notice that they were raising the interest rate on any new purchases several percentage points. I called the bank and was told that it was handled by a different division and they couldn't help me. I visited a branch that was familiar with me, expressed my concern and requested a reason for the excessive increase. They commented that "you've had these accounts since before I was born", made some calls, and replied that no one was available to answer that question They promised to follow-up and call me with the results. The next day they did call and explained that they were told that it was due to normal procedures they follow with everyone and there's nothing they could due to change it. I visited the branch again and complained that it was a strange way to reward loyal customers by penalizing them with higher interest. They expressed they were sorry for the whole thing but there was nothing they could do. The interest rate has now been raised on any new purchases/uses and they still have not bothered to inform me as to why, or if they even care about customers who have been with them for years. As soon as I clear up some matters, I will be changing my accounts to another financial institution that understands what customer service is. That is if I can find one.