Drive Thru Gone Wrong At Burger King Rivonia

Went to BK in Rivonia drive through, asked for the R250 for 2 Texas Bbq King special. I get to the window and tell the lady I would like one with a pepsi and the other with a Mountain Dew. She tells me that would be an extra R3, I tell her to go ahead and add it on to which she responds she cant add it cos its already on the second payment till. I ask her to then cancel the order and then re order the same meal to which she starts telling me in a rude manner “next time I should say the drink when I order cos the special comes with Pepsi…” to which I respond “how was I supposed to know” she rolls her eyes whilst am telling her she should have advised me of the choices available/not available and their surcharges….to which she then says “…so what drink did you want” (like lets get over this *******). I then tell her am not going to have this, drive off to the front office to where I explain this issue to her Manager, Warren, who's very apologetic. He proceeds to get my order and apologises profusely. The lady that assisted me was Sthembile if I am not wrong, and this was on the 21 May 2024 at 7.30pm by the drive thru. I trust management will deal with this sort of behaviour. Mind you,my family and I have visited that BK SEVERAL times, we shall not be doing that after this unfortunate and unnecessary incident.