I called through HANGOUT. (Dial the Number through Hangout Dialler)
I was trying from 3 days and yesterday it got connected.
The waiting time was 40 Minutes.
I called at 10: 19 PM and agent picked the call on 10:59 PM (Pakistan Time)
The Number is +1 905 676 3640
The connecting codes are 2-3-4-0 (Do not dial at once, you need to listen what she says, then dial)
After dialing, she will tell approximate waiting time and you will be on hold. After waiting, the agent will pick your call and will ask for UCI Number (Make sure you have UCI Number and Application Number infront of you)
Then he will ask questions related to you like Full Name, Address, Phone Number, Email etc to verify it's you.
After that, you can ask any question related to your application.
You can ask
Eligibility Status, Medical Status, Which office is processing your application, Last update on Application, VO Notes etc
Agents are available only from 6 PM to 2 AM (Pakistan Time) or 8 AM to 4 PM (Toronto Time)