Guys, Finally it happened !!
After 45 days from biometrics.
Online sds :July 5th
Biometrics : July 16th
Correspondence letter: August 6th
Second Correspondence letter : August 9th (medical also updated)
.
Was waiting daily till 4am morning to get a donot reply mail. Didnt get it till 30th.
I contacted IRCC agent on august 14th and got to know that my application is approved and this 2 correspondence letters with same content is due to technical error. He said he can't do anything except messaging administrative office about my case.
I also sent a webform and contacted them again via phone 3 days ago.
And today at 1.10am IST ,i got the passport request.
Not sure whether happy or sad because my classes start on September 3rd. Has informed college about visa delay and i am yet to recieve a response regarding extension.
This forum was so helpful and thanks everyone