Quick Credit - Harrashment calls from Quick Credit

This is with regards to the loan of Rs. ***** that I took from the Quick Credit (an instant personal loan app) (www.quickcredit.in). Every month they are charging **** as interest. For more than * years I am paying interest to them as I was not able to clear their loan that is only *****/-. Every month they are harassing me by multiple recovery calls, emails and they are sending msgs to my contact lists as well. I have already paid more than *,**,*** to them as there is no option for me to pay the whole amount together. I lost my job during the lockdown and doing freelancing work right now. Every month they are sending msgs and telling if I don't pay they will send msgs to my contact list, one time they did the same thing. As I have cleared ***** long back still they are charging me monthly interest that is **** for the amount of *****/-. I told them that I can pay this ***** as EMI so that it will be cleared in *-* months the whole amount but they are not ready. Kindly help me. I can share all the details which are required by your kind office. They are not registered NBFC and charging huge amounts as interest from all the customers. Kindly help me and save me from them. I don't have any solution, I can't pay this huge interest as of now as already paid huge money to them.
I can share bank statement or google pay screenshots if you need in this process. For the last * months, they are asking *-* thousand interest for the amount *****/- loan.

Pls help me as I am very depressed now because of them. Don't know what to do.