Not able to pay Amex Japan credit card bill

I have a usage of about 100,000¥ on my amex credit card, the problem is that, i can pay the card bill only on 28th of the month, coz i get my salary on the 25th, but amex’s auto deduct is on the 15th of every month, so the transaction fails on 15th, and the retry of the payment is on 28th, and it happens on 28th, it was kinda all cool until now when they told me that they are summing up my all the balance, so instead of 33k every month (that would close the card balance in 3 months, coz i have 100,000 usage), it will now come as a whole bill of 100,000, but my bank balance sadly isn’t available in such amount on the deduction date, now i failed to pay on 15th of Aug also and on 28th of August also.
Am i in danger? I tried talking it out, to split it in three months and close the account, but they didn’t agree.

by Severe-Literature-31