Client deleted their Account

Welp like it says in the title was chosen to do a drawing request for a client today and sent the sketch for them an hour later. They seemed to like the sketch and I tell them about payment, They said if they can pay me after the drawing was completed, I said I only do upfront or Half first/Half later. They were unsure about it and I had to explain how a lot of artist had to be make sure they don’t get scammed out of free art. The client proceeds to say “OMG free art?!” And that they understand because they have an art friend that tells them about this stuff. I was obviously confused about that respond and told them I need some sort of payment if they want me to continue than a few minutes later the account was deleted.

Im honestly just really tired of dealing with people like this at this point really needed the money :/