I am hesitant to give the OK for credit card debits at vendor discretion.
When we make our Christmas Gift Baskets
Christmas Gift Baskets, we try to have as small a shopfloor window as possible, as stock sitting on the warehouse floor basically costs us interest.
Ring your credit card company and cancel the authorization, so the payment will not go through. That will progress the negotiation. There is no use having stock and no cashflow - it's not good for either you or your supplier.