No delivery and NO UPDATES

I entered into a contract in good faith on their terms explained, however upon no delivery received, I had to do all the following-up.

Then I'm told they're out of stock, but they did not think it would be important enough to inform the customer. Upon asking for a refund, i'm told this will take 2 weeks to take effect.

How can one company consistently be so bad at customer service and communicating?