Refund from Distance MBA due

Dear Lawyer, i- Request your inputs about my situation. I have enrolled in 2013 for a distance MBA education in a College in Bangalore, which partnered with BDU (BharathiDasan University Tiruchirappalli (http://www.bdu.ac.in/)) that offers distance MBA degree. ii- The Course fee the College defined was Rs.2,50,000/-, I have paid partial amount of Rs.1,25,000/- by November 2013 the same year as College demanded fees to be paid in full. As I am working I didn't go to the college for few years and now decided to discontinue, in January 2017. iii- I visited the College regarding forfeiting my admission and requested to handover my 10th Class, 12th Class & BCA Degree Certificates, however College initially wanted me to pay complete amount and get the Certificates. After, repeated requests the College agreed to handover my Certificates however wanted a Rs.100 notary from me stating I should not demand refund from the college. Additional Details: i- College didn't handover any ID Card to me, ii- College gave me Acknowledgement, however College stamp on the copy is Unavailable that they have my 10th,12th,DegreeCerticate(BCA degree issued by CV Raman Private University, recognised by UGC). iii- College issued Provisional Admission Receipt acknowledging Rs.1,00,000/- received for academic year 2013-2015 as second installment, Copy has a College stamp. iv- Rest Rs.25,000/- is paid to the College subsidiary which is a Stock Market Institution. The acknowledgement copy is given by the Stock Market institution for Rs.25,000 which doesn't have a company's stamp. v- I have completed only the first semester. Lateron, I have never attended exams but paid the exam fees. vi- I have paid exam fee till last semester however I didn't attend any exams after passing 1st semester. Kindly help me with your insights, should I hand over the notary stating I will not demand for refund to the College and get the certificates. PleaseNote: I am requesting refund after some years or will Law help me give refund/partial and give me the certificates as well.