I have been towed a few times now on Vancouver Island under Good Sam. Only problem is in the beginning on the phone, trying to explain where we are. Once that is sorted out, it goes well.
I have learned to have lots of money on my pay as you go phone (only use it for emergencies like this--I do not have automatic add money if it runs out) while the Good Sam guys learn their geography and put me on hold forever, then the tow truck guys call me for more phone time.
The tow is free, but the phone calls sure are not free! :(
I suppose that is not an issue with folks who have "normal" cell phone plans that already cost a bunch.