Petrol

We went to put petrol and Thapelo Seloane did not want to assist us he said our card is going decline before we could even petrol we got so embarrassed .He left us on the tank and filled for the other customer and when I ask for the manager he said to me have you ever seen a manager working late then I asked for a supervisor still he denied ,I told him I am going to report him and he said yes I should go ahead he is not scared he is used to people like us,he also said we are nothing .So who is he to tell the customer to get off?