AIBU to find this an incredibly patronising and irritating term of address?
Today I was walking through the door of Sainsbury's and some bloke flogging their utilities package tried to flag me down with 'Young lady, are you interested in....?'
The young lady wasn't interested 
I have also had this from senior colleagues and a medic recently. I am 32 for fuck's sake and neither 'young' nor a 'lady'. To me, 'young lady' is what my grandmother used to say when I was about 8 and misbehaving.
Whatever happened to 'madam' or even just Revolting? Grrr.