I have a contractor in Florida who didn't finish work agreed upon and thus, they were not paid in full. They have filed a lien against my property. They filed 88 days after substantive completion of work, which I know falls within the 90 days. But they never notified me. I've heard they're required to notify you within 15 days of filing. Is this true? If it is, does this render this lien voidable? What process do I go through to get this thrown out?