Displeased services at petrol Station

At about 12h40 on the 15th of March we we went to pour petrol at bp garage old farm Faerie glen. We found all the pumps occupied and decided to wait behind a polo which was about to pay but noticed that the petrol attendant went to fetch the machine. One of the attendants told us to move to another pump by than another car drove in and he decided to ignore us and help the other guy which was white. We continued to drive to another pump and another car drove in and they decided to help him first mind you its also a white guy we tried to get their attention and ask why they were doing that and we got harsh words by both the attendants. This is very heart breaking because it felt like cos we are black we don't deserve to be helped first. How can they insinuate we didn't come first when everyone around saw we got there first. Are we not good enough for their petrol cos of our skin colour. Such occurrences can make one question alot of things. I dont think we will be using that petrol station anymore but hope proper training will be given to avoid such happening again.