TransUnion Data Engineer I interview questions

I interviewed December. It took around 3 months. Recruiter reached me around November. We had discussions around compensation, interview process. Conversation went well. Then moved on to hiring manager round. Discussions were around my experience how well I would fit in the role etc. Finally panel round with 3 nice people, they asked lot of questions around my experience, had SQL whiteboarding. I thought it went well. I was told that the holidays would delay the process, which was understandable. I followed up after the interview for about a month. The recruiter was nice enough to say initially that she received really positive feeback from the team and would update soon. After weeks when I asked for an update again, she said there was no update and would update when she has any. I did not follow up after and I did not receive any update at all. I have accepted another offer but I cannot figure out how can a company not have an update for about 2 months? I mean, everyone is spending time to interview with the company. Is it too hard to let the candidates about the decision? Very bad experience. P.s. Its been more than 3 months, I saw the job resposted again today. I mean, really???

Interviewed with three different people separately.