Quantiphi Automation Testing Engineer interview questions

2 Technical 1 HR Round Covered manual testing concepts, SQL queries for database testing. Few questions on automation testing which covers selenium with java and Test NG framework. Api testing and the http methods with response codes.

I had the worst experience with this interview. The process went on for months. 1st they conducted a technical round where I had to answer 20 MCQ. I cleared that round. Then they scheduled the second round but later they said that round because panel was not available. Then they scheduled for another day. After 10-12 days they scheduled the meeting. I have answered majority of the questions. Then the interviewer said that he is searching for performance testers. After few days then again I got the mail saying I Cleared the technical round. So I have to give another technical round. I cleared that round where he asked more about my project and framework. Later they scheduled the HR round. The HR guy says that he can't pay me the amount which they advertised. Also he wants me to join within 15-20 days. Even though I have mentioned that my notice period is 90 days. After 15-20 days I got the mail saying I got rejected. They wasted nearly 2 months of mine. I want a written apologies from this company for wasting my time and playing with my expectations.