Cognizant Technology Solutions — Letter of offer

Hi
I have given interview on 7th August later on i got mail to submit current company pay slips and other documents along with cis sheet then on 14th August i got call from and Had discussion about salary and location and after few week i asked from HR he told some approval is pending you will get offer letter
Now there is no update and not getting response of call and mail
I request at least give the status hold, rejection or reply to mail