You can borrow 500.00 and pay back monthly in your current bank. This is called a loan and you will be expected to pay it bank with a given amount of interest. For more information, please visit your bank's customer care.
How many months are you planning to pay it? This is really hard because you are only borrowing $500. You can get a payday loan at http://www.quickloantoday.us but you need to pay it right away on your next payday.