Hello, all. A couple of months ago I did work for an international corporate client. It was my first job with this client. Their brand is highly recognizable and they have a presence in virtually every major city in America (and many cities overseas). I don't have a contract with the client. I know, I should have had one drawn up. The shoot was put together at the last minute, and I bypassed that option in order to get the written approvals more quickly. I delivered the images to the client per their request, and they responded they were happy with the images. I sent in my invoice, with the agreed upon amount. After 30 days, I sent a follow up email. Crickets. After 40 days I sent another email, and my contact there told me, per their policy, they pay vendors "Net 45," so I'd have to wait 45 days before they cut a check. It's been 57 days now. I've sent a couple of follow up emails, but I'm getting nowhere. I get the "I'll check into this" type responses, but then don't ever hear back. What suggestions would you guys and gals have for where I can go from here? I'm at a loss, and the amount they owe me is relatively substantial. Thanks.