What can I do if my HOA states that I have not paid my quarterly dues and is threatening to put a lien against my property?

What can I do if my HOA, its board of directors, and HOA attorney have been harassing my family for many years? I have attempted to sell my home in the past and am currently doing so to get away from the situation. The harassment has been a complex nature of things but include things such as threatening to take my home, threats of bodily harm, false violations, vandalism of my property, and making false reports to the police. Recently, I received a letter from my HOA claiming that I have not made my quarterly dues payment. They have already assessed a late fee and demand that I pay or a lien will be placed on my property that will lead to foreclosure. I have made all my payments. I have receipts as well as bank statements of my payments. My property has always been in good standing and in accordance with the HOA's bylaws.