why does this car cut out?vauxhall zaphira?

I have the same cutting out problem as so many of these questioners have, seriously guys we must all tweet ,email, or txt or blog the Vauxhall site ,we may have bought second hand but that doesn't mean we should put up with a fault that this company, unless they are completely blind , drunk or stupid do not by know know about. Don't know about you guys but I can't afford this type of dishonesty. H.