CAR LEFT WITH SMELL OF OIL, PETROL AFTER SERVICE

on the 07th May 2015 i booked my car for routine service with BMW Alberante. On collection of my car it had residue smell of petrol. I was told it was a spillage that would go away. I tolerated the condition till Friday when i decided i take the car back. On Friday the technicians did whatever they did and again i was informed the smell will go away. Now today the 12th May 2015, the car still has smell of petrol. I made all efforts to resolving and speaking to BMW but i am send from pillar to post. The is no commitment to resolving my concern which is a health risk to me and my family. I spoke to Ann, Wendy, Marlon, i emailed Charl and Service Manager, i contacted every person i can think of at BMW.