Expedia Group interview questions

I was contacted by an in house recruiter in November 2017, she asked me about my current role, and if I'd be interested in relocating back home (Amman/Jordan), then she told me that I passed the screening process and that the next step will start in beginning of December. Nobody contacted me until I sent a follow up email, then she apologized and told me that the next step of the screening will start in the beginning of January 2018, at that point they sent me a technical assignment that I solved and got feedback for right away (second week of January 2018) then I was told that I passed to the next step which will start in the second week of February. I was contacted again to schedule 4 online interviews, 2 with Amman office and two more with London office, the interviews were easy, we talked about technology, culture and motivation to join the company. after that, I was never contacted again. This was the most verbose and lengthy interview processes I have ever been through and ending it without any kind of feedback is so disrespectful and unprofessional, they just wasted my time without for nothing.