Petrol in Diesel Vehicle

Unapologetic and horrible customer service! Thy put petrol in my diesel vehicle! They did arrange for a flush and drainage of the fuel tank by a mechanic just behind the service station but having lost a whole days income they missed an opportunity for me to say great things about their service! They are unapologetic, miserable and rude people! They only way they will ever see me again is when I go back to sue them should my car’s fuel pump, injectors or something blow up as a result of this!