Gauhati University — Pg admission difficulty with

Sir
I have registered for pg admission and paid but my payment has not yet been confirmed hence my application is not yet approved . I have tried mailing and calling the given helpline number but all are switched off . Honestly this is not expected from a prestigious university . Along with this i also mailed about some corrections i had to made but the website doesn't allow one to correct the mistakes . please take necessary action since the last date is very near so that i don't have to pay it again .

Ashish