Nov 2011 medium rectification

Hello Friends,

I am appearing for CA final second group in Nov 2011. I had filled online application form and by mistake the medium of answering is selected as HINDI  though am an English medium student .

After contacting institute on the subject matter and as guided by them i made an application along with relevant documents twice but still no response from them. 

In my admit card the language of answer is Hindi only and no response on any helpline nos or thru mail ids provided by institute.

I don know wat to do next pls guide .

Thanks