Pathetic customer service across all social channels

I have been trying to place an order online today with unsuccessful attempts. After selecting a collection store, I cannot proceed with the order as I receive an error every single time. The error is definitely a bug in the code. I have reached out to the Facebook team, sent a message on Twitter, logged a complaint on the website but have been ignored on every single channel. I also called the call centre but they could not assist and said the online team will respond in 48 hrs. Given that your website is broken, should the team not be doing UAT before launching a big Black Friday sale? I cannot place the order and if my items are out of stock or move to the original price when you eventually get your act together, I will be upset. This is negligence and pathetic customer service. Whats the point of us raising issues when we are ignored. Please sort this out as it makes you look bad.