Times Of India — Harassment from online loan app

There is a threating whatsupp messages from different numbers especially + 65 numbers saying if you don't repay the loan you will.be harrased.just 1 month back I just went In to their app seeing their details now they are saying u have to repay but for what just went to see the app.
Tried to contact the app but all fake adress is off Bangalore and mobile number is switched off saying in Bengali.
Why the play store app is not verifying as the govt has asked for some stringent laws for the loan app.
They just show some luceritive loan then harrass us, we don't know now what to do .

We sincerely seek the help of government to help us .