Saudi Arabian Airlines — bad behavior and refund

Hi i travel on 3rd of jan 2019 from jeddah to dubai through sv 594 along with my wife and two 8months old infants. It was really bad experience at jeddah airport. When i see checkin is open i came in the queue for check in counter which are i believe counter # 15 to 27 and queue was very long but i along with my family wait in the queue and when we reach next to check in counter supervisor there start yelling for cairo flights and they stop passengers of all other flights even who are standing in the queue and calling for passengers for cairo even who are not in the queue are going for checkin i request him that as i am with my family and i am in the queue plus it my turn for checkin so let me go but he stopped me i wonder what is the benefit for standing in the queue for so long i fell i am rubbish as i stand in queue for so long than on check in counter i come to know that i can not travel on my confirm seats for which i pay extra and which was booked by saudia staff and they confirm me that i can travel on these seats with infants my confirm seats are 30 b and 30 j for my wife but person at check in said i can’t travel with infants on these seats and they change our seats to 55k and 56 l with out giving any option now it’s more than one month i am writing emails to saudia airline for refund of extra payment which i make for seat selection but they refund only for one seat and one seat payment is still pending and now even they stop replying emails