Correct me if I'm wrong

Hie,was at Woolworths (Northmead square) and I bought two tin roof ice cream.At the till was served by Cecilia Usisi who before scanning my items asked me if I need my slip.Ok I get to the till,give her my Woolworths card together with my items I'm purchasing and I the give her the money(it is when I have her the money she asked if I needed my slip.I could be wrong or something but I have never ever been asked if I need my slip at Woolworths stores so with that I feel there's something going on that I can not put my finger on.Would you check your cashiers what they doing coz I really don't want to be asked such stupid questions and ofcoz I requested my till slip.....