Mercedes-Benz of Calabasas

I was paying cash (certified check) for a car and specifically asked that they not do a hard credit pull on my credit file. The salesman assured me that they would not. I got home and found that they conducted a hard pull which made my credit score (800+) go down. Why did they do hard credit pull when for all intents and purposes I was paying cash??? When I complained, they promised me that they would investigate and get back to me. Six days later and it has been nothing but silence. No response from anyone. VERY POOR CUSTOMER SERVICE and sales practices.