Badaga language - 'sha - ஷ ' and 'zha - ழ' ?

Recently I had the pleasure of receiving  Anandha Raju [inventor of Badaga Anandha script] with his charming wife and children at our place and had a pow wow on Badaga, the great language.. Anandha feels that there is no 'sh -ஷ ' sound in Badaga Maathu [language].

I disagree. What about barasha (year) - பரஷ, baashay (language) - பாஷே, Kashta (difficulty) ௦ கஷ்ட , nashta (loss) - நஷ்ட  and ishta (wish) - இஷ்ட ?

Another 'sound' of interest is 'zha - ழ' - the only word that comes to mind is 'eizhu'- (seven) -இழ்ழு .

What do you think?