Book Mooch

I attempted to join bookmooch.com and logged onto my account to add books only to find my account closed. So I emailed and they responded saying I had an account in bad standing- which I dont. So I attempted to tell them I just moved here which they responded to by telling me I have the same IP address as the account in question. I dont know how IP addresses work so I just simply tried telling them again that I just moved here. They then responded with the threat to sue me for mail fraud to which I responded with a simple "thank god you didnt accept me for your website because I wouldnt want to be treated like this as a user of your services and you wont be hearing from me again". They then emailed me again, that email I ignored, when I didnt respond they emailed me yet again. I asked them not to harass me as I had dropped the subject and I commenced to blocking their email address so they couldnt continue to harass me. I even went as far as to email usps customer service to tell them of the experience (just in case they are doing this to other people - bookmooch cant go around using the post office as a threat to innocent people). If you want to be treated rudely, with no respect, and be bullied then go ahead and use bookmooch. But if you want to be treated with basic dignity like your a human being then Id suggest staying away.