For unpaid county property taxes, start with the Trustee for the county holding the account and keep the notice or file number. If a notice names a court or sale, use that notice to check the current file with the office listed; a general office page cannot confirm a specific balance, case, or date.
A mortgage foreclosure is separate. Many Tennessee home loans use a deed of trust; when it gives the trustee a power of sale, the trustee may sell the property at public auction without a court case. A mortgage notice does not tell you the county tax-account or tax-sale status. Check each notice with the lender or trustee and the relevant county office.