Unstable website

I logged in this morning at 8.30am to start preparing for the sale and the competition for the vanity. Filled my cart, the vanity was added. Proceeded to checkout and for the last 20 minutes I am getting error after error. This is utter nonsense. Don't encourage customers to come support your business when your website is lame. I am so highly disappointed. I planned so well for this specific giveaway and black Friday sale and it did not serve me at all. I am still unable to check out my cart. This is terrible customer service!!