Really bad customer service

Engen Bloemfontein North bound. We were refueling at 23:40, and our fleet card did not want to go through. We phoned the bank, who said the speed point's parameters needed to be updated, then it will go through. We asked for a supervisor, who just said she is not allowed to do that and they can help us 7am the next morning. We then very adamantly said then phone a manager who can do it. She refused. Only once we lost our cool, did she phone her manager. Said manager, has no idea what is going on, as he said RMB is not one of their merchants. That is not possible, as Engen has the ebucks agreement with RMB. Please go for some customer care training, because had you, dear supervisor, Kenelo (if that is how it is spelled, because you also refused to give me your name), just looked like you were interested in figuring out what the problem is, things would not have escalated.