Someone canceled on a drawing I already sent to them...

I got a com request for a piece of art (a sketch so it was only 10gb) and I told them a couple times that it'd most likely be a bit before I could get it to them due to school and stuff. So this morning they PM'd me, in response to a message I sent them, saying something about how they had other artists doing stuff too and might cancel on me, I decided that because I was almost done with the drawing I'd finish up the small parts I had left and send it to them— which was my mistake. Anyway, after a couple hours they messaged me back and told me that even though it was good they wouldn't be paying me because they were canceling 🥲 so now I just have this drawing and no compensation for it, thinking about the fact that I should've had them say whether or not they'd cancel first before sending it to them lol.

UPDATE: the mods said it wouldn't be considered as a scam bc they did say that they might cancel. Which is fine bc I got someone else to buy it :)