Synchrony Bank charged " transaction fees '' and interest fees for a purchase that was made 3 months ago at XXXX XXXX XXXX XXXX, the store for which this bank services their credit card accounts. 

Made the purchase on by phone with the clear understanding that if the balance is pad off in 6 month, the there would be no interest fees whatsoever. 
The bank just told me that the info interest purchase I made was for only 30 days.