I supported an ex-boyfriend for a period of about 5-6 months. When we broke up, we agreed on an amount of $3000 that he would eventually pay me. He left me a voice mail message on my phone stating this fact and I kept this tape. He has since been hostile and refuse to come to an agreement. What are my chances? I have no receipts anymore except for Mortgage payment, copies of check. But no copies of living expenses.