Ok, that is very confusing as the visitor visa states valid for five months, so practically I can stay in Nigeria all that time. I called the embassy in Canada who issued my visa and they specified that. I am planning to to stay around 3 months for the whole summer. But I am not sure if I can pay extensions as the flight tickets are already exorbitantly expensive. I think that they imagine that Canadians grow money on trees here in canada which is wrong.
We appealed the decision too and waiting for an interview date at Montreal. We decided not to apply again as I am not sure what happens in Accra, we don't see them working professionally on applications, so we better let the Canadian office handle our application.