Bike Not Serviced Properly

Location/place: Pune,Maharashtra.

Name of company/service: Sehgal Autoriders Pvt.Ltd

I serviced bike from Sehgal autoriders Pvt Ltd,Chinchwad,Pune.
Bill No-123410735.
Bike Reg.No-MH-14 CY-159.
Oil leakage,fork out not done properly.They also not return any old material.
I complained about it twice but they did not response.Please do the needful.