Someone used my credid card - need contact address

[282d7e71]

Hi, I found 8 charges (20 USD each) on my account for Upwork services. I have never used your service, nor have I ordered anything. 

Is there any way to contact someone at Upwork? Some email address? Chatbot doesn't help. 
I need to find out what those charges are for. I have order numbers etc. 

[AndreaG]

Hi Mateusz,

Thank you for bringing this to our attention, please be assured we are taking it seriously. We’ve escalated your post to a support ticket where one of our agents can assist you further. Thank you for posting in the community!