в максимально короткий срок(If however you have any queries in relation to this account, please contact our Credit Control department by calling 555-5555, or e-mail bla@bla.com at your earliest opportunityalex)
благодарим вас за терпение(стандартная фраза из службы поддержки клиентов: A customer service representative will be in touch as soon as possible to address your concerns. We appreciate your patience and look forward to helping you with your inquiry.ART Vancouver)