Waisl Software Developer interview questions

Initially when HR called me, we discussed and decided package numbers if I get selected and moved forward with interviews. Total 3 interviews. First 2 were technical interviews. Interviewer was chill and asked basic dsa, system design and some technical background questions. This position was for research team. Third round was with manager. Manager is egoistic and sounds arrogant. After all process got call from HR that I got selected but they don't have that much budget and were reducing package hike amount by 50%. Then I declined offer. Worst experience. They just wasted my time. If you don't have budget you should have told me before only.