Uber Business Analyst interview questions

I have applied for this position on Uber Career website for like more than 10times. I received reply from the team saying that they would like to setup and introductory call with me and wanted me to choose calendar time. The problem here is they have provided a button upon clicking it I should be narrated to a calendar where I can select. But here the button wasn't working. Also I tried replying back but to my unluckyness it won't accept any incoming mails. I tried and got number of HR and informed him the same. He started ignoring my calls and messages later. If this is how you treat the applicants I doubt how you treat your employees. This was the worst experience I have ever had. I was interested in this position as this is very relevant to the work I did.