Bajaj Finance — stop this annoying phone calls to my number

I have been getting this annoying phone calls from bajaj finserv on daily basis about 6 to 7. Even blocking them, they start calling at my number from all different numbers. Its so, disturbing that i once went to police station to complain about it. They said they will register with the it cell. Just would request it for the final time. Stop it or else be ready for a consumer case and it cell complain.