You can. Not juice
I got refills on my coffee and water... I think the menu said no free refills on juice .... and that's because the freshly squeeze the orange juice...
You can definitely get refills on at least coffee and soft drinks, but if you couldn't get any refills this time, it's possibly because the machine wasn't working that time and is being repaired. Another possibility could be that the waiter/waitress just forgot to give you a refill. If that's the case, don't worry about it. All restaurants that serve fountain drinks give free refills.
Thanks! Your answer is awaiting moderation.