Bank of America Credit Card Complaint

Bank of America Credit card department,

Credit line increase/decrease Arizona

My wife, who controlled all finances during our marriage, and I divorced in - 2015. Since that date I have been working to rehab my credit score due credit card high limits. I had - in credit card debt between - companies, -, - -, and Bank of America. Attempting to rehab my credit score I made large payments to pay off my - ( $1500.00 ) and - - ( $1500.00 ) to alieviate my credit card debt to credit card limit ratio. Also, I made a $2000.00 payment to my Bank of America card to decrease the balance from $5000.00 to $3000.00. Upon receipt of the $3000.00 payment Bank of America immediately decreased my credit limit to $3400.00 leaving me with open credit of $400.00 instead of what I thought would be $2000.00. How am I supposed to recover my credit score when I went from maxed out to maxed out while paying $2000.00? This can not happen to Americans who are doing everything they can to improve their credit scores. Also, Bank of America stated they would decline a credit increase back to $5000.00 because of a $19000.00 revolving line in use ( total ). This is not accurate due to my $5000.00 pay down of revolving debt only to have the ratio increase with their credit line decrease. I feel victimized. Debt issues in America will not be fixed by sneaking credit decreases to middle-class citizens immediately after a large payment is made.