There are a number of buses from Wellawaya to Tissamaharama and Matara be aware that you maybe refused if you have a lot of luggage, it is sometimes easier to pay for an extra ticket for your baggage.
Bus No.10 from Kandy to Kataragama
Route: Kandy, Nuwaraeliya, Welimada, Bandarawela, Wellawaya, Tissamaharama, Kataragama
Bus No.31 from : Bandarawela to Matara
Route: Bandarawela, Ella, Wellawaya, Tanamalwila, Hambantota, Tangalle, Matara