Sister! I really have no idea how long CIC can take to call for interview but i have heard from people that it roughly takes 1 to 1 & half year. Allah knows better.
yes there are many people on this forum who have passed interviews. My case was a Nikkah only case and on the basis of that the visa officer had put me in Interview Queue in September 2012. The last letter I received from embassy was in June 2012 & in response to that letter i sent them some further pictures of nikkah, telephone bills, skype history, email history, parcel slips & money transfer slips & other related documents. since then I didn't hear anything from them so I was curious what is happening with my case. So I applied GCMS Notes in December 2012 and from there I came to know that I am in Interview Queue because I have not performed Rukhsati / Walima and there are no Post wedding pictures of Honeymoon or other proofs of living together. So to resolve this objection we have performed Rukhsati / Walima in May 2013. My wife lived with me for almost one month and then she moved back to Canada as she had to continue her job there. In june I have sent all the additional proofs to embassy. Now lets see what happens. I am very much hopeful that we all will hear good news soon in sha Allah. Please remember in your prayers. thank you