Qantas rewards flight changed mid booking

I was booking a rewards flight last night and before I got to the payment section I got an error so I had to refresh the page and after refreshing the page my flight went from 20k points to 53k points! Has this happened to anyone before? I tried calling and so far I haven’t been able to get any help. They pretty much telling me they can’t do anything. I’m so mad because now I’m out 20k points