I have a client who I've worked for a few times in the past who has always paid cash on delivery. A month ago I took on a job for her and during an email with proofs, I mentioned that she could pay via bank transfer if its easier than getting to a cash machine (they live in the stick). She seemed very keen on the idea and asked me to send the invoice that day and she'd make the payment whilst their leaflets were being printed. A week later I called to let them know the order was ready and she apologised for not making payment as she'd been ill in hospital. Having worked for them before I thought not a problem I know she'll pay so delivered the order and as I'd thought she was very apologetic for the delay and was going to do it right away. Almost 2 weeks later and no money (now nearly a week over the 14days specified on the invoice) so I emailed a reminder and got a reply saying she was in hospital again and would be home at the weekend and would make payment then. Fast forward another week and still no money. Again I've emailed explaining that I understand her poor health is the likely delay in payment but I can't afford to finance unpaid invoices over extended periods. This time she's not even bothered to respond!?! Where do I go from here? There's no formal contract but a reasonable email trail to constitute an order.