Mike,
Where does it say a VFR pilot needs permission to enter class C? FAR 91.130 (c) (1) - Operations in Class C airspace - says
Arrival or through flight. Each person must establish two-way radio communications with the ATC facility (including foreign ATC in the case of foreign airspace designated in the United States) providing air traffic services prior to entering that airspace and thereafter maintain those communications while within that airspace.
I've never received 'permission', I usually get asked if I am familiar, always receive a beacon code, and then get told to head somewhere. I've never been given permission (i.e a clearance) when VFR. I've been told transition is approved, but I don't think that is the same as permission. From my understanding, one I have established two way communications, I can penetrate the Class C without having my request approved.
Does it say something else in your ATC handbook?
regards