Not putting a return address on the envelope or check.
My Complaint: They sent me a check for 1,993.10 saying to deposit it into my account. When the check cleared to pull it all out and 350.00 was for me and I was to go shopping with the rest and could keep everything I bought as a bonus. Really where do they do that at? You got to b crazy to think it was real. I did at first and then started noticing things.
My Demand: Stop them