Allocating Payment to Promotional Financing Balance

Description

I am trying to pay off a few 6 month promotional balances. I also have some easy pay transactions on my account. At the end of last month I paid over $300 above what my minimum payment for the billing cycle and then called on 4 separate occasions to have that put towards my 6 month promotional balances. Instead that payment all went towards my easy pay balance. I have gotten nothing but the runaround from the overseas customer services reps. The first 2 insisted it was done and it would show on my account in the next 72 hours which never happened. The 3rd said there have been issues with Synchrony taking over the credit system but assured me it would show by August 12th but nope….I just called again and the rep basically said that I cannot pay off these promo balances until my easy pay balances have been paid off. This is ridiculous! I have never had a problem with allocating payments until Synchrony came into the fold. How can I get my payments properly allocated? I am about to just pay the whole thing off and never use this service ever again.