Louages to Matmata, however, leave from a different place: the Esso station about 300 meters to the East of the main louage station. The first louage will get you to Matmata Nouvelle (New Matmata) for 1.5 TD, and another louage to old Matmata (1 TD).
While the bus may drop you off near the louage station, the bus station is (unverified) located about 200 meters to the South-West.
The train station is (unverified) about 700 meters to the East of the Louage station.