Songwriter, topliner, vocalist

Got a (paid) test vocal from this singer. Worked quite well, so I released the money for the test vocal and asked her to move on with the full job. After a rather vague explanation on why she couldn't move on at the moment, i said that i had no deadline, asking her when she could deliver. After that i heard nothing back, not even after i followed up. And she won't give me a refund.