Upwork Can Improve Himself By Avoiding Wrong Decision 

Upwork can improve himself following these steps:

1. Payment cannot be refund without the Permission of Freelancers.
2. Strict policies against Fake Freelancers and Fake Clients By Blocking him accounts.
3. Clients Payment methods also verified and Remove those clients which have Not payment verification.
4. Implement on criteria of jobs which Minimum jobs rate of each Job can be up to 10 USD.
5. Upwork Can improve the supporting staff of Upwork If Upwork increase the number of jobs.