3D PLM Global Services Java Developer interview questions

They are taking test which contains Java technical questions and 3 codes ...codes are medium level then 1 technical interview and 1 hr interview . They say that you are selected ..you will get email from recuiter but I didn't get any email and not even phone call. But at time of interview they say you are selected. This process are very bad . They are not valuable about timing . Giver time it 9 AM and start time is 4 PM.