Related to my question about a locksmith blatantly overcharging me and ripping me off when I had no alternative. I called my bank to reverse the transaction but as it had been paid with Zelle there was nothing they could do; however, they suggested I take the locksmith to small claims court. This seems like a good approach as they charged $450 for a simple key cylinder replacement, and I can verify this was a gouge.
That said, when I went to go about submitting the claim, I realized I needed to provide the court with a mailing address so they could serve the locksmith. The locksmith has - through various means - dodged and refused to provide me with such a mailing address. Do I have any way to force their hand here? They "don't have a physical location" but it seems impossible to me that a business doesn't have a mailing address. There must be something I can do here, right? No way simply refusing to provide an address to be served at allows someone to avoid being (civilly) sued? Does this refusal make the matter criminal? Can I threaten them with criminal suit? Would this be blackmail?