Mr Price Home K90 Boksburg

I am totally very unhappy with the service I got yesterday at Mr Price Home in Boksburg K90. I'm 37 weeks pregnant and I went there to buy 2 fitted sheets and continentals. I could not stand long so I asked for assistance to pay faster than to stand longer. The people at the till told me that they are also pregnant and I should stand in the line because the white people shout at them. I totally feel that was very unfair as I could give birth anytime. Even the store manager was very rude. How do you expect someone who is 9 months pregnant to stand in a long slow line? They are rude maybe it's because I'm black.