Lack of service and NO customer service - DC BOOKS

I have been trying to get a hold of DC books for the last few weeks with no success. I’ve sent emails, tried the landline number on their website, which goes to an automated recording stating no one is available and one cannot leave a message either, spoke to online agents, all of this with no help. I’ve placed two orders on the 8th of January and one of the orders was a “pre-order” hence the placing of two orders on the same day. Delivery time for these were both stipulated at 7-14 business days. 20 Days in, I received only one package, the pre-order. I’ve tried contacting DC books again and was left on read by the online agent, which is not the first time. It’s happened before. I’m fed up and quite frankly very disappointed in the lack of service from DC books online store. There is NO communication whatsoever from their side on ETA or just basic customer service. Just wondering if I’ll actually receive my second order.