After waiting for more than 2 months and no reply from CIC, I called the centre again today. I sent my application to sponsor my wife on April 4th, 2015, and they received it on April 7th, 2015. CSR told me that I sponsorship application has been approved and the file was sent to London office on June 2nd, 2015. They had my email wrong, that's why I didn't get the AOR. Now, i have to fill online form to correct the email address. I got the application number from him. On ecas it says.
Sponsorship
We received your application to sponsor XXXXXXX on April 7, 2015.
We started processing your application on April 30, 2015.
We sent you correspondence on June 1, 2015 about the decision on your application
Permanent Residence
We received XXXXXXXX application for permanent residence on April 7, 2015.
Medical results have been received.
For LVO its 28 months wait
or 40 months for ISB