Unknowns interview questions

I went through all the interview rounds, but when I asked the HR about the salary range during the final round, they refused to disclose it. I mentioned my expectation of ₹20,000 as an experienced candidate, and soon after, I was rejected. It seems they were looking for someone willing to accept around ₹13,000 instead. Honestly, it’s disappointing — salary discussions should be transparent and clarified within the first two or three rounds, not left vague until the end.