Karvy — ncd with reliance home finance - not received interest and principal amount yet

I have an ncd of reliance home finance ltd of which the registrar is karvy computershare private limited.

My isin no. Is ine217k07ac4, application no. 76008507. Folio no. In[protected]. I had an amount of rs.150000/- issued on 3 jan 2017 for 3 years. For the years 2018 and 2019, i got the interest but on 3 jan 2020, i didn't receive the interest and the principal amount. I used to get emails from rhfl. [protected]@karvy.com, but i am unable to send emails to ask the query and it bounces back to me. I tried to call them and no one lifts up. This is hard-earned money.
This is a very reckless attitude of not responding to customers after taking away their money. Please, i request you to give my interest and the principal amount back that was due on 3rd jan 2020. Awaiting your quick action and reply