Vastees.com review: I'm upset by their poor business practices, and I would encourage any future visitors to avoid buying from this site

I purchased a shirt from vastees.com on May 13th. I was promptly given a tracking number for the order, and the delivery date from the site was estimated as May 19th. The day after the 19th the shirt still hadn't even been shipped. I contacted vastees' customer support through email asking about my shirt(they had no phone number listed on the site). Later that day someone named Ryan from the company contacted me and said the shirt was on back order and that it should arrive by the 26th. The 26th is tomorrow, and nothing has shipped yet. I believe It's wrong for a company to sell products they don't have and not inform their customers. I'm upset by their poor business practices, and I would encourage any future visitors to avoid buying from this site.