Unprofessional manager

We went to Gira for lunch but didn't want to eat much as we have a event happening later but I love there food especially there rump trinchado..I go there every now and then. I'm not a big eater and I know I never finish the trinchado and usually take the other half as a doggy bag...so I asked my partner wouldn't he rather share one with Me as we still have an event later and he wasn't that hungry either..so we order it to share.... Than the manager comes to us rude very rude telling us we can't share so that we can save money?? What! Than my hubby tells him it's not to save money just that.. That's where the sentence ends because the manager interrupts us by saying he will bring us the bill?? I understand if it's a rule I get it but he could have just said that and we would have ordered another plate of food?? Can't believe it... really and there were other customers around us listening to this so embarrassing