Call ads or Digital marketing on Commision basis

We are a law firm in bengaluru, Karnataka. We are looking forward for Lead generating digital call ad marketing consultant to setup and operate the digital marketing services for commission basis. Preferable from Bengaluru India. We are looking for performance marketers for 150 Milestone successful converted leads of specific target group for the commission of 1.5 Lakhs. Advance of 15% and rest based on case to case basis or on milestone achievement.