Hey John, these boards are covered by local google guides and not by Enterprise. Please call them directly as they will most likely not reply here. From personal experience when using a debit card after returning a rental it takes time in my case about 7 days to get my money back. Thats why its good to use a credit card as its only a hold not a transaction.
Not sure I use my credit card not bank card.
Thanks! Your answer is awaiting moderation.