Amex Money Transfers Complaint

Amex Money transfers department,

Domestic (US) money transfer Wrong amount charged or received Illinois

My credit limit is $11000.00. I want balance transfer $9700.00 from $11000.00. But my credit card company told me I can only $5500.00 transfer from that. But why? This is not mentioned in cardmember agreement. Also I called - times but they do not give me reasonable reason. I say what is meaning of agreement. They told me I can transfer only 50 % of credit line. But this never mention any where in cardmember agreement. Actually they offered 0 % balance transfer for 15 months. Please see attached cardholders aggreement.