Smart Shopper Card Issue

I was at BP Ebony Park this afternoon around 14:30 to exchange my smart shopper points for an oil purchase. Firstly - the petrol attendant knew nothing about what I was talking about. He claimed that there is no smart shopper facility in that outlet. Which was a shock to me because I am always asked to swipe a smart shopper card every time when I fill up. So, I asked for the manager, he came out and said the facility is there but I must check if I have enough vouchers to make the purchase. Fair enough, I asked him to check - this process took 10 minutes - only for the petrol attendant to tell me that "lento ayenzeki" and when I asked him the reason he said he doesn't know why.... REALLY??? No guys - I know my card has about R115 if not more, surely it can make a R70 oil purchase. Please train your people on product knowledge, services offered and customer service. I am not a happy camper right now.