Disrespectful cashier nicole

Very bad and disappointed.. I been to the garage Sunday night around 23:10 I filles fuel R100 fuel. I was in a rush as I do uber and had a trip on.. I gave the fuel attendant R200 note..few mins went by he didn't come with me change . He then told me cashier Nicole is calling me... I went to her... she told the fuel attendant not to give me change cz her I owe her cousin money.. and she started swearing infront off al other customers that where building up at the que cause she left them Un attended to hold my changed back which was nothing to do with bp or pnp express... I got late for my uber trip which had to be a cancelation I lost out on 270 rand cause of her drama.. please she need to be sorted out