Treated like I have an infectious disease

Travelling from Katkop, I buy loads of food for the road from SPAR KHOWA, but when I asked if they have a toilet I could use, the lady responded arrogantly: Asinifuni apha! (We don't want you people here!) I found that quite offensive. I didn't have cash to pay for the toilet next door and had to ask someone to pay for me. However, spending as much as I did at Spar Khowa and be talked to as someone with an infectious and untreatable disease is something that didn't go down well. I'm sure they can do better. Don't take my money if you don't want me! Or if you're convinced I have an infectious disease. Do better Mr Peter and staff.