They alloted me a time for interview, then they changed it without informing me and later said you didnt join that one we will contact you in future if we have positions

I had applied through LinkedIn and asked to come over to the office for Face to face interview. The process took about 3.5 hrs and it was total of 3 rounds. All the 3 rounds were technical. 1st round - Technical - The interviewer went over my resume and started asking questions about the frameworks and libraries i have worked upon. I had previously worked on Agentic Voice AI , so the interviewer started asking complete questions about voice AI only. - Questions also involved about architecture planning for an web application. - Questions also involved about my approach to deliver an feature. - Asked , what would I do if I am completely blocked to build an feature etc. 2nd Round - Technical again - Interviewer asked me to build a React custom hooks which would inform if the child element is scrolled ( Something like infinite loading ) , so when the div is scrolled to certain position , it should console log/trigger an API. - Interviewer asked me to build a Custom component similar to Toast library popup(only logic and UI was not required). So when toast component is triggered 3 times with different messages , it should popup over the screen and stay for 3 seconds and should disappear. This component can be used in throughout the application. 3rd Round - Technical - Asked me about basic of JavaScript, differences between variables , differences between `==` and `===` and how it would act , had given console logs of few operators and asked me about the output. - Asked about `call , bind ,apply` - Asked about `event loop in JS`. - Asked to write a React custom hook - which should take the queryParams from the URL ,parse it , and should pass it on to and endpoint.