Experis Trainee-Software Developer interview questions

The company conducted pool campus.The first round of interview was held on April.It was based on Merittrac test -1.simple aptitude questions and 2.coding questions which were also easy.The shortlisted candidates went for the second round after 1month which also technical round and then selected candidates sat for a voice round(I don't know why they arranged that round)but without declaring the result of third round they congratulated everyone and told candidates would receive a call from Manipal University for Hr round and also told that the chance of getting rejected is 0.001% that anyone may not consider it as elimination round.Some got the call within 2 or 3 days but many got after another 1 month after continuously begging to arrange the call.Some people got the confirmation mail but so many candidates were rejected after this and few candidates are still on hold. I never experienced this kind of company that takes 3 months for the selection process.