you have hiatus hernia
which was under control by zintac, pantoprazole
it may be mainly 2 types 1.rolling 2.sliding.
in both type some part of stomach goes into thorasic cavity.
so reflux is a common problem here.
yet it is controlled with drugs effectively in most cases, as you have.
sometimes it need surgery in uncontrollable sign symptoms.
its a kind of permanent solution.
but before doing a surgery many things are to be evaluated eg. your current physical status,your sign symptoms-disease severity etc.
so to have permanent solution you should consult an experienced gastro intestinal surgeon.