Acting like the doing us favour

I was at the garage @ 162 Bram Fischer Dr, Ferndale, Randburg, 2194 yesterday to buy something and the 2 lady tellers told me they won't assist me and I ended waiting there for 10 min until I decided to leave,that is after I was told they are changing shifts and the can't assist me I should wait for them until they done.How does my buying affect their shift change,especially while I was going to swipe?Should I be waiting there for that long when I was supposed to be going back to work myself.YOUR SERVICE IS PATHETIC,When I went out to drive away from the garage the petrol attended is dancing while pouring petrol for a taxi driver who has parked on 2 sides of the petrol tank there obstructing traffic for a lousy R5 tip.I pour @ around R800 worth of petrol per week but I'm treated like trash,Which is about R3200 per month that is paying their salaries is that fair?