Bests & Worsts Reviews from Amazon

So my husband and I were making a large purchase in August of 2015. The interest free promotion was not applied, and instead they applied the 5% credit back to the card. I called synchrony bank to notify them of the error and they were going to place the correct promotion on the account, and credit any interest that I had been charged. It is now February 2016 and I still have yet to get a correct statement. Between them applying credits and debits (which sync bank says are amazon purchases!) to try and balance the account my account now is accruing interest and does not reflect the appropriate balance. I have had to spend countless hours on the phone with their customer service, and have been hung up on by the initial international call center multiple times. Buyer beware. Do not do business with unless you have a couple hours a month to spend with synchrony bank customer service. I must say that their customer service reps and managers have been very nice and professional once my call gets escalated, however the system appears to have multiple flaws.