Bad Customer service

The restaurant refused to split our meal into two plates. The waiter's excuse was that customers complain as to who has so many prawns and who has so many mussels. I mean we went there to share a meal, and were not hungry to a point that we wanted to meals. we are adults and we do not go around fighting about who has a lot of prawns and who doesn't. Other Primi's do allow sharing of meals, I mean the customer has a right to have a meal served as they choose, within reason. I am disappointed in their service.