so are people that sad that they read the carpet cleaning section every week even though they don't need a carpet cleaner :
not only do they read the carpet section do they read the plumbing, electrician, Arial erectors, dog walkers etc etc.. just in case they need one of them in the next year or so.
all this 'advertise every week so they see your name constantly and trust you' is I think nonsense
now if you have a feature ad in the same place every week so people see it all the time then that is different, they will ring you not because they constantly see your ad so trust you, but because they need a carpet cleaner and remember that there is a carpet cleaner in the local paper every week.
Mike