Appalling, Untruthful business ethics.

I work for a company that has 22 service vehicles and Sean from Hay Hoe Motors had made an arrangement with me that taking our fleet size into consideration, on every full tank of fuel that we fill, we will receive a 2 litre cold drink on con condition that only he is allowed to authorise the handing out of the cool drink upon him signing the receipt of the fuel filled. I had filled fuel on 4 occassions rhat was after 18:00 hours and Sean had already left. The attendants had said to me that I should come in when Sean is in and he will issue my cold drinks. Eventually when I do get to see Sean he was with another female employee who was extremely rude and refused to give her name. She said to me that she is unaware of that arrangement, in Seans presence, I reminded him of our arrangement and he said that they do not issue cold drinks for fuel filled after hours, both of them were hostile toward me and just ignored me after they said this to me. The cold drinks are not the issue, its the principle, the attitude and the manner in which they treated me thats appalling. Their business sense is totally unprofessional and untruthful. We now deal with another service station that treats us with respect and professionalism.