I have complete 1 job 3 weeks before. The job was 375 dollars. But my clients gave me 100 dollars only. Is there any chance to get the rest of the money?
It sounds like you made a mistake. I think you used Upwork incorrectly.
Was this a fixed-price contract?
And only one third was funded?
If so, then the contract has been completed and you can not force the client to send you more money.
Only funded milestones count.
Budget doesn't count. Promised amount doesn't count.
NEXT TIME, do not work on unfunded milestones.