Barclays PLC Credit Card Complaint

Barclays PLC Credit card department,

Credit line increase/decrease Florida

my Barclaycard credit card account credit line was reduced from - to -, this action causes major change in my credit score, because it maximizes card over - % thereby reducing credit score, all payments are on time, never late! I HAVE - CREDIT CARDS, AND THE ONLY ONE THAT REDUCES CREDIT LIMITS IS BARCLAYCARD!