Payments received from an obligor under an open end consumer credit plan by the creditor shall be posted promptly to the obligor’s account as specified in regulations of the Bureau. Such regulations shall prevent a finance charge from being imposed on any obligor if the creditor has received the obligor’s payment in readily identifiable form, by 5:00 p.m. on the date on which such payment is due, in the amount, manner, and location indicated by the creditor to avoid the imposition thereof.