Agoda interview questions

So I used to be an employee at Agoda but got laid off due to "covid". A couple of weeks later, I noticed they were hiring again which was surprising. Why lay off 1500 then if you need to hire people again? Long story short, I apply to a backend role and get contacted a few days later for a software engineer in test role. I reply back saying that I did not apply to this position, I applied to a backend role. They admit they messed up and apologize and then say that the hiring manager still thinks I am a good fit for this role (since it requires development background). I had some doubts but decided to move forward. I was then invited to 2 live coding interviews then finally invited to the onsite interviews where I met with 3 people, 1 senior QA and 2 managers. They all went well, especially the ones with the managers. However, I do not come from a testing background and mentioned this to my interviewers; they all claimed it's not a requirement. 15 days after my final interview, I get a general rejection email saying they moved with different candidates. I do not understand why it took them 15 days to answer. I had 2 job offers during that period but I decided to wait to see the result with Agoda. This is my personal opinion, I also don't understand why I had to undergo all rounds of interview again. I was their employee just less than a year ago. I guess it just tells you about their fake culture.