I am divya,completed12 (bio)in private,not getting,seat for MBBS give me idea to seated in MBBS in less fees in chennai

I have 65% in 12 but I completed 12 in private .my problem is that in many college there is no eligibility for private studied certificate of 12 .so,l want to do MBBS only ,in less fee in chennai.please give me idea wat to do ( private means like correspondence study) by divya