Oki-Ni canceled my order because they couldn't "verify payment as it did not pass our security team's checks." Yet, they didn't even bother to inform or email me until I inquired about the order a week later. Apparently they "do not currently have the facility to inform our customers of any cancelled or returned orders." Terrible business practice. Now the items are gone.
Their site has been having some issues with payment. As for customer service, I've had some success getting meaurements from them before (on an expensive item). However, ultimately, they're owned by Menlook, which has never struck me as being strong on customer service.