Complain

I was ****med or ****** by petrol attended who offered me a wrong sasol reward card after explaining that I lost sasol reward card then offered me a new card of which gonna link up with my old card.The card given to me I managed to fill more points on it and apparentlyI found about this ***** two months back and I spoke with sasol filling station manager and their call center but unfortunately I haven't been helped yet and sasol filling station manager he's aware of this problem and when they trace they can see on their call center who committed this but was told they are not allowed to tell me , so please help me with this problem .I sent the proof of me filling that card with my bank card to them but nothing happens ,so please me