How to handle "clever" Upwork clients?

I'm not sure if the word clever is correct or not, and I believe "conceited" would be a better fit. (enlighten me on this one, please)

I've recently started an Upwork profile, and I'm trying to be nice to everyone to get a little traction.

After the fifth proposal, I've got an offer from a client for a specific chrome extension worth $50. Long story short, after delivering the initial version, he asked for a couple of random things.

One was to replace a piece of text from showing "wait..." to "please wait...". So, as a newcomer on Upwork, I decided not to say anything and update the extension as he likes.

After four revisions and two or three TeamViewer sessions of testing and verifying the functionality, he sent a video from the initial version and told me the extension wouldn't work. I could see he uninstalled the previous version and reinstalled the first one (as there were two or three major differences between the first and second revisions).

I called him on his bluff, and he went offline without saying anything.

Now, I'm wondering. What would've been a better approach to this?
Also, for people who actively freelance on Upwork, how would you handle such a client?

Report them.

Better to report such type of clients. They like to get things done for free

I'm not familiar with upwork, but on other sites you can check client rating and also say how many revisions.

Josh Butler said:

Better to report such type of clients. They like to get things done for free

Click to expand...

Yes, not reporting is like encouraging them which will motivate them to repeat this with others.

Definitely report that person

Seems like they are trying to scam and not pay you. Probably report the person if they don't reply soon.