I have problem speaking a few letters

by Faraz
(Bahawalpur)

Dear sir, my name is Faraz and I m a 15 years old child from Pakistan, well I have a problem speaking a few letters like c,s,z,d,t and the difference between double like gari will be pronounced as gaari, waadha as wada, so I wanna know that is there something that can be done to improve this, I think that now as I'm 15 so it is too late but still I want a confirmation because believe me living like this isn't easy when you're constantly the victim of fun and laughters and it affect your social life, so I really want to get rid of it, I'll be really grateful for your answer.