Placed an order for a HiFiMan 4XX and got an estimated ship date of 5-10-20 with a Product Run Live classification. Sent a follow-up to customer service, but response was an automated maybe we will get back to you in 5-7 days. Is this typical? How far behind are they and why no periodic update to shipping info? There is not even an easy way to cancel? What kind of experiences are the rest of you having?