WordPress.com has announced 24/7 support where people can ask their questions without having to wait long. The WordPress.com engineers will reply using the contact form and reply within 24 hours or lesser. Just remember to use the contact form to send your questions to the WordPress.com team, to get a quicker reply.
Here is news from WordPress:
Not long ago, our team was online 9 a.m to 4 p.m. PDT to answer your questions and keep your blog running smoothly. Soon after, we brought it up to 24-hour support, five days and week, so those across the country and across the globe wouldn’t have to wait for their answers.