Hello Yulia!
I'm sorry to hear that! It's always a shame when a unfortunate situation like this occurs.
It's not easy to please both the clients and the freelancers, but there's definitely room to improve Upwork's support.
Thank you for sharing this!
With or without Upwork, I'm sure you'll manage. In the end, Upwork aims to show you, before any client, your potential.
Best of luck,
Al