Talk to a lawyer even if it's worth less. Even if all you do is a nastygram, a nastygram on a lawyer's letterhead is worth far more than one from you. It won't

Talk to a lawyer even if it's worth less. Even if all you do is a nastygram, a nastygram on a lawyer's letterhead is worth far more than one from you. It won't be very expensive, but may have very valuable results all by itself.