+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
You will need to wait...have patience...plenty patience. Mine too six months and finally rejected. Your application is in London on queue for processing. Nigeria's applications are sent to London or Kenya. Mine was processed in London. Was your application online or paper?
How do check your visa office
 
I did biometric on 6th August and has not gotten any updates till now, though I was requested to submit an additional documents (pof) for the second time and upon till now, nothing has happened. Raised CSE last month and was told it's still active.

Why Nigeria visa application delaying this much? I'm on the 7th months now after biometric