Science First Awful experience Internet

Absolutely horrible experienc! I spent 3 days on the phone with different representatives just to find the salesperson who knows about products they are selling. After 3 days, I finally ordered the items I needed and paid for expedited shipping, also was promised that the items would be shipped same day. However, next day I received email that the order is cancelled for some unknown reason. Now they are telling me that the product I need is out of stock. It's simply impossible to reach them over the phone, seems like they always closed or something. Customer service is awful, absolutely unprofessional and rude. Will never buy from this company and would never recommend to anyone.