Sold two weeks ago and I REALLY need the money (£50) but they've ignored all messages /invoices. I know i should now open a case...but during that, can i send a second chance offer to the next person down? Or do i have to wait for the case to close? (and i also risk the problem of two people paying at same time?) Am i allowed to send a 2nd chance offer and if that person pays, just close the case early?