Unilever Assistant Manager interview questions

very rigorous process interview happens in 3 diff stages at multi work levels. the screening is also very extensive. each interview lasts for almost one or one and a half hour

Interview process follows Telephonic, face to face and HR. They said you have cleared all rounds and I sent pay slips and offer letter as well, no response from then. Its been more than three months I have started interview process. They don't say either selected or rejected, trying to keep me on hold. Once in a while HR calls and enquire about notice period and bla bla. HR don't attend calls and they don't reply on mails. Please keep in mind that Time is valuable for everyone. Please follow some morals, I have a great feeling on Unilever after experiences it is changing