In reply to Oujmik:
Someone did exactly this to me. I sent them a short email saying I had them by the balls and they were an idiot as they'd broken a legally binding contract and I could now cause them a ton of grief. I also said I had no intention of doing this but they shouldn't put themselves in this position again. Left negative feedback saying what they'd done and forgot about it.
They were not malicious, made a mistake.
Forgive then, I'm sure a better cheaper one will crop up.
Toby