Bad service, poor communication on both petrol station and V+

Been to this petrol station 4 times and all there time they telling me that there v+ card they process transaction manual which found out on the third time that they not suppose to do that when processing transaction when calling v+ contact centre, on which they promise to fix there matter which they failed up until today when I went to there same petrol station they told me there very same staff, called v+ again told me to go back to there station I did got wow to my surprised horrible treatment no one wanted to speak to me when telling them got the v+ person over the phone. I was told to come back Monday because person incharge will be back that time. So I have been treated badly because of trying to find out why they processing manual when v+ contact centre say they must not. Who is telling there truth here, are petrol station trained differently when it comes to this V+ card?