Deductions & credits

I have contacted the preparer but I have not gotten a response from him yet.  The last time I told him about the letter he told me to let him know what the IRS said.  At this point I feel as though he doesn’t know what he is doing and he’s won’t be using his services again.  I’d like to know if I could just pay the remaining 1,000 I owe on the credit this year and be done with it so it won’t be an issue on the future.  If so does it require an amended return or could o contact that department and make a payment on it.  I have asked him this question and he didn’t know the answer. Go figure……