Cashier or Meddler of affairs???

I was shocked in dis-belief when I shopped at Checkers Hyper Cornubia Mall on the 01/11/2019 Friday .Both my fiance and I stood at Teller 1,the disabled isle cause we had 5 items to pay for and the isle had only 2 people in the queue, when it was our turn the cashier Thabisile Mthethwa as on the slip, greeted us. Then while scanning the items she asked my fiance is this your friend or what, puzzled he jus looked at her and I jus starred at her in shock. She thereafter said to him, this lady shops here every month with another guy in the municipality uniform in the zulu lauguage. We just looked at her, because she did not realise the guy she mentioned I shopped with every month was him, he was out of uniform on Friday. As an area manager of Tfg I employ people every day and they stick to their job description, not once has any of my employees ever behaved in such a manner knowing there will bring disrepute to the company name and disciplinary action will be taken. We both do not even know her she just sees us shopping there every month what right does she have to make a statement like that. Is she employed to meddle in customers affairs or be a cashier??? I reside in the Phoenix area and every month my family and I shop at checkers hyper cornubia mall by choice, but going forward this will stop with immediate effect. Word of mouth has a negative effect on a company and I will make sure people here about this incident. This incident occurred around 17:44,cashier was a short girl with short blonde hair which can be viewed on the camera's. Never had I felt so humiliated, as well as disgusted at any store. Does she do this all the time, therefore resulting in you guys loosing business??? You guys just lost business and a loyal customer... Erica Pillay.