CG-VAK Software Sr. Software Engineer interview questions

In initial stage itself I have informed them I already have an offer they said first attend the interview then we'll discuss like that they said but after I cleared all rounds they said what I'm currently having they can give that only. But I said it's no use to select your company instead what I'm already having and also it's product based and CGvak is service based , I don't have any good point's to prefer CG-Vak like that I said then HR said then choose that company and I said ok I'll choose that. The things is if you don't have budget and and you are not willing to convince the candidate means why you are scheduling interview for the candidate who already having offer more than your budget. You guys gave me an commitment and then only we synced means you should take responsibility to atleast satisfy the candidate about the process. Poor behavior of HR

It's a very cool, they are asking multipule questins about the oops (basics) , providing full time work from home. It almost 30 min process. asked sql as well and different questions.