Hi,my Daughter Is 3.7 Years Old.she Has Vomiting Since Her

hi,my daughter is 3.7 years old.she has vomiting since her birth.lots of medicnes has been given to her.tests have been done.recently barium swallow meal follow meal through has been and reflum is diagnosed.wheneverwe go to the doctrs they nevr go for endoscpy.they alwys say she will b fine bt the case is that she is getting worse day by day.she has iron deficiency anemia and her colr has got pale.her height is nt growng
her weight is 11 kg.what should be done? she is still taking medincs like vomilux and peptinil her vomiting is stopped bt she keeps on coughing.