Synchrony Financial Credit Card Complaint

Synchrony Financial Credit card department,

Credit line increase/decrease Iowa

In spite of good credit ( better rating than when I applied for the card ) and zero payment issues with their company or any other creditor, Synchrony Bank, Walmart Credit card arbitrarily reduced my credit balance from $3000.00 to $1500.00. I 've attempted to correct this through them and they only give me the run around and refuse to return it to the limit that was originally issued. They can not specify any reason as to why it was reduced.