LLC help Tennessee

Location: East Tennessee, I hopped into staring a business idea basically with little knowledge of what I was doing, I initially wanted it to be an LLC, however once I realized that there were other options, i decided to go another direction and I never finished filing the LLC with the state, I also never paid the filing fee or got a business license under the LLC. Anyway, I got a letter in the mail a couple of days ago stating an intent to lien and intent to levy for an outstanding tax payment of over $4k, with no income towards the LLC that was never finished filing, how do I owe taxes? I have no assets to put a lien on does this mean they’ll take me to jail over the unpaid tax? Or will they take a payment plan? I am lost and scared and emailing the state revenue office and calling them was no help since it doesn’t come up as a legally operating entity in any business search. I have until Oct 5th according to the letter. Any advice would be greatly appreciated.