I went to the local CIC office today even though i confirmed three time through Call Centre that i don't have to appear for the exam as per the update on my file.
They didn't make me write the test again but instead had me wait in the waiting room, and then the Immigration office looked at my passport and file again. He said that he just has to verify one entry back in to Canada from US. They will contact CBSA and it shouldn't take more than 3-4 days. I can expect two things either a request for more infomation or an invitation for Oath Ceremony in 3-4 months. He did mention about my communication with the Call centre and asked me why i am still here so i said that i was confused and wanted to find out what's going on.
By the way i was RQ'd after my citizenship test in January because of shortfall in residency calculation due to an honest mistake.