Ive received the same letter in the mail. It was for $109, but the insurance company, and the tests listed were wrong. I did actually have the PreDX test through Tethys about 2 years ago, and at that time, my insurance company sent me a check which I sent to them. I have reply back from a billing manager at that time saying account was settled.
So Im not really concerned about these bogus letters they are sending. Im guessing its only a matter of time before FTC or attorney general gets involved. My only issue is, the person got my name, address, and the balance I owed, so who knows what other info this company may have had on me. Luckily, I also had Anthem Blue Cross, shopped at Target and Home depot, so my identity is already leaked and I have about 3 years of "identity protection" built up from those companies, which will protect me hopefully.
I did attempt to call the # after hours, and the voice mailbox was full. If you press the # key, it will send you to the voicemail directory, and you can listen to the names/companies who also use this service. Wonder if all those are scamers or what.