Synchrony Financial Credit Card Complaint

Synchrony Financial Credit card department,

Vermont

I have had my TJ- rewards MasterCard through Synchrony Bank since 2011. During that time, I have never missed a payment and always pay my card off in full, usually twice a month. This month they accepted my payment of over $1400.00 but placed a hold on my card so I could n't use it. I called, they said the hold was for 6 days and could n't be released. On day 6, I called again, and they extended the hold to 9 days. Why I asked why, they said it was because I made to many payments that were too large. They also said they could hold my payments for as long as they wanted for any reason, or no reason at all, and there was nothing I could do about it. I am so angry that they can just take my money and then tie up my card when I have never missed a payment, or done anything that could be considered irresponsible in my history with this card.