you got invited....You Apply..... END of Story.
calculating hours will also takes into account holidays, vacations, Sick days and other blah blah.
you are good to go.
stop contacting CIC uselessly. when the tiger is not bothering you, do you really need to throw stones at the tiger?
have you manipulated the hours you put in your profile? if not then why worry?
Remember to not misrepresent yourself. They find out you go downhill.
how they know the hours worked? very simple, you income and you salary per hour. Or they will just ask your employer by calling them or they can ask you to submit the letter saying you are a full time permanent employee who works this many hours.
CIC does not provide Non-answers, they just cant deal with people asking random questions. because answering questions is time consuming and they dont have that much staff.
they have already provided answers when they gave you guidelines.
you need personal attention, CIC advises you to go to lawyers and consultants.