ICAI — refund back of my amount that was posted two times

Address:

Mumbai City, Maharashtra

I rithik gupta paid 17200 exact for my inter ca fee and it got posted two times.
I had complained about this 3 months back and yet there is no response
They never pick any calls by my side and if they do why is my problem not solves yet?
This is everyday thing now wake up call them ask for resolution sleep
I am tired of this now
I want my money back as soon as possible
I don't belong to a very rich family my dad is struggling very hard to educate me
And 17, 200 is a very amount to me and my family
Please resolve this thing!