USAA Savings Credit Card Complaint

USAA Savings Credit card department,

Credit line increase/decrease Florida

USAA Savings Bank reduced my credit limit to - from -.with no apparent reason. At the time of this reduction my credit score was - and I had a balance of - on the card.more or less and account is current. Do to there reduction my score went to - because I was at 92 % of my credit limit with them. The bank sent me a letter stating several possible reason of witch they did not pertain to me.I called them and asked for an explanation they stated they could not give an explanation that it was in my credit report. So i pulled my report and had - banks review it. found no reason for this reduction. I have been a long tern customer and feel this is unfair. They have damaged my reputation unfairly.