insta cred application automatic payment dalkr high intrest leti h.

The Insta Cred loan app credits money to my account without my permission. I previously repaid the amount within 7 days at a high interest rate. Now, they have credited ₹3,100 again on October 8th and are demanding a repayment of ₹5,400 by October 11th. I am being harassed through calls and messages. What should I do now, Sir? Please resolve this issue. The app's name is Insta Cred, and the calls are coming from the number [PHONE].