2Hats Logic Solutions interview questions

in which have 3 round of the process.one is they give me a program question,next ask one or more programs.if passed the program test they called an HR round .its cool of round.they ask the benefits.

I applied for front end position, within 24 hrs they called me. I got machine test nxt day its abt 2 hrs. It was pretty easy. I complete within tym frame. They called me after 3 months that I got pass in that test. Your f2f interview on nxt day, But they didnt call me, I called HR she not take my call. Again after 20 days . She called me again and said your f2f will on day aftr tomorrow. Again same happn.. I dont know y they wasting tym..