Bad service from vodacom in PE, summer strand village mall

I went to pay for my account at vodacom on the 2 May, guess what I have money in my account however it was not enough so I told the consultant that I will pay with card and top up with cash. And he said that I should wait he needs to verify with his manager guess what the response from the manager that No that is accepted. I can't pay with cash and card and when I asked Why not No answer. I was devastated and don't understand why they can't allow me to do so because I usually do that when I don't have enough money from my account. It was vodacom in Summer strand in PE summer strand village Mall she didn't have a decent to come out and explained to me why I should not do that. I really felt like I was not important enough and the service was bad. I had been a client from vodacom more than 5 years now with this experience that I will never forget