PhonePe — fraud and phone abuse

Address:

Dehradun, Uttarakhand, 248008

Hello
I have been continuously receiving call from a fraudulent with no. [protected], who first robbed my father through phonepe request money and when i tried to contact him is threatening me and saying abusive words. He is so confident with our law and order that he is still using that number on whatsapp and literally saying these words-"you cant even touch my pubic hairs, and no one can do anything". I have already register a complaint in cyber cell dehradun about the fraud, but from there also didn't get any positive response. Other than the fraud which i do understand is our ends fault, the issue is more of a law & order failure where a person is getting a sim card without kyc and then using the same phone number on whatsapp even after the fraud. And as far as the bank response is concern they are as slow as they can and yet call their banking system user friendly.