Speech Therapist / diction-accent coach? (Istanbul)

Hello everyone,

I know this is a really big long shot. But does anyone know of any speech therapists or diction/accent therapists in Istanbul I can visit?

I have been learning Turkish for the last 2 years, and now I can speak pretty fluently most of the time with my friends. But because of my (in my opinion) unpleasant American accent I wish I didn't have, I still have so many troubles with saying the "r" sounds in Turkish. I can't say words like: 'burssuz', '***-ebilirim/-***-abilirim', etc. correctly and it really makes me upset. :) I don't want to sound like American speaking Turkish, I want to sound as correct and Turkish as possible when speaking Turkish of course.

But, I don't know if a regular Turkish teacher can help me with this. Because unless they have a specific degree in teaching Turkish as a foreign/secondary language (and most don't), they may not be specialized in helping me make the sounds of the Turkish language.

So anyway, if anyone knows of a speech therapy center or accent coach or diction course that can help me (if they know English it's even better), please let me know.

Thank you very much