Damage to my vehicle

On Saturday 15 August 2015 i went to the ENGEN garage on Sparks Road in Sydenham Durban. I told the attendant to top me up with R200 of 50ppm diesel. The attendant filled my vehicle up with R200 of unleaded petrol. I drove off not knowing the guy topped me up with petrol instead off diesel. Long story short, my vehicle is damaged and Hassim Ismail the garage owner has taken responsibility to repair my vehicle. The last time i heard from Hassim was on Tuesday 18 August 2015. I tried emailing him and calling him on friday 21 august 2015 and no answer. I went to the service station on saturday 22 august 2015 and left a message for him to contact me. I have not recieved any feedback as yet. I am extremely irritable by this and i will be taking matters further.