I started doing work for them recently and I had a funny feeling from the very beginning. I was sent orders and they did not include a company address and the emails weren't even signed by anyone. I had to ask the owner what her name was. I started realizing that their invoices were starting to really add up so I asked her how often she paid. I then never received an answer. This of course made me even more suspicious so I told her I could not complete the 2 outstanding orders until I had until I received an answer. She said that she would have to get my fees approved by her client. She also asked me to send over what is currently due. I didn't rush to do this because I also thought it was a bad sign that she had no idea what was due as I sent over an invoice with every order. I haven't heard from her since.

Let's keep each other posted.