Adeptia Software Test Engineer interview questions

Initially there was an programming test on Hackerearth. After clearing that round I got call for technical interview I also cleared that one too and then comes the final round which is Technical+Mangerial. The final interview got postponed 3 times. In final round i answered all the ans as well as solved programming questions after a well and good interview they rejected me without giving any reason that is the worst thing of this company