Upwork doesn't understand that as a platform that connects freelancers and clients, they have a responsibility by referring freelancers to clients. When there is a problem with the quality of the service they provide, UPWORK will simply say that it is not their problem. It is like you take an UBER and the guy robs you or leaves you in the wrong city and Uber said "It is not my Uber's responsibility. If the driver didn't take you to your destination, you need to talk to the driver". How irresponsible is a company that doesn't understand their role in a commercial agreement? Please save yourself a lot of pain and use other services. Freelancers are great, but from time to time you will find a bad one. Just make sure you use the services of a great platform that takes their business seriously.