Medplus India — Non refund of money when the product is returned

I have been purchasing medicines from medplus, rtc colony, hayathnagar, hyderabad branch for my father's cardio problems for the last two years and my mobile number is '[protected]'. On 17.05.2020, i have purchased certain medicines out of which 'm-strong' is one which is recommended by the doctor regularly. However, today i. E.[protected], since the doctor had changed the said medicine, i have visited the said branch to return the medicines. Whereas the person available at stores refused to refund the money and asked me to purchase medicines instead. The amount involved is rs 1298/-. You are requested direct the stores to refund the money.