Hi, I am very surprised that as you passed the test almost a year ago that you have heard nothing. Have you spoken to anybody on the IRCC helpline at all and have they shed any light on this at all? Have they advised or given you any information as to why you have heard nothing. I would be concerned at this stage that the office may have overlooked your file or mistakenly thought everything was complete - assuming the helpline have not told you otherwise?
An online communication should instigate a response in 5 working days.
You could try obtaining your file but this will take time and in the meantime, you are still in the same boat. Or you could contact your local MP and explain the situation since the average should be 1 year. Personally I would call first, if I am unhappy with the response I would send a formal online communication, and after 5 days, I would approach my MP and ask for their help. Others may have better advice or have a way to expedite this. Hope all works out for you very quickly.