No, Its not so. I have never received wait letter and in reply to my recent CSI, they wrote:
Dear Sir or Madam,
Please use the following file number for future correspondance = B05xxxxxx.
In our previous correspondence dated April 2012 the following letter was sent to the applicant.
No action has been taken at this time.
If you require original documents to be returned, please advise us.
and then wait letter copy paste.
and at the end of email, someone added a note: according to notes, Blitz letter wasn't sent .
I guess inko khud b nahi pata k yeh kiya kehna aur kerna chah rahay hain
. Khair its my 3rd file number, and I can check ecas using UCI only, None of the file numbers work.