Synchrony Financial Bank Account Or Service Complaint

Synchrony Financial Bank account or service department,

Other bank product/service Making/receiving payments, sending money New York

I have - promotional balances with Synchrony Financial - of which is a 0 % interest that needs to be paid off by -/-/2017 in order to not incur interest. Every month I make a payment of $200.00 for the account. The amount necessary to be paid for this 0 % balance not to incur interest is never applied correctly requiring me to call every month. The explanation I 've been given is this is how the system applies it and I need to call. I find this disturbing considering Synchrony set the terms and should be responsible to make sure it is applied correctly. I also have several other concerns about the website FAQ 's and security question answers.