Unprofessional and refuse refund on wrongly supp**** parts

Very unprofessional. They supp**** me wit a wrong part and refuse to provide a refund. There are many people complaining of this. I told them I needed a front grill for a 2008 Mercedes A180 diesel with Vin: W169DD.... the grill does not fit and is actually for an A190 petrol with VIN: W16900.... Sales person is Moniqye.