Checkout.com Senior Front End Engineer interview questions

One of the worst experiences in recent memory. I had an initial interview with two team members. I was told that it went very well and that the next stage was a take-home test. I was initially sent the wrong test. It was only after I pointed out that the test had nothing to do with front-end development that the correct one was sent. After completing the test, which required around 4 hours work, I was then sent an incredibly impersonal email the next day to say that the role had been filled. I sent a reply complaining that it was terrible to ask people to do technical tests and not give them any feedback or a further chance in the process. I received an apology that said the email shouldn't have been sent to me and that they were reviewing my test and considering me for another role. Since then I have been ghosted, with no feedback for the test and no updates on my application.