Actually shocked at posters trying to imply that OP went up to a stranger and shoved her phone in their face with no context.
Conversations and interactions work both ways. She goes up to someone in uniform and says 'can I ask about this product please?'.
Normal response: 'sure, what do you need to know?' Or 'Do you want me to check if it's in stock for you?'.
Under very circumstances is it socially appropriate to just stare aggressively at someone who asked a simple question. Do a lot of the previous posters play some kind of game where they take the most normal, appropriate response and pretend they think the opposite?
A pp said she would have just stared blankly back and waited for you to fill in the blanks? What? Have you such poor social awareness and communication skills that you couldn't use your words to develop a very easy dialogue to figure out the issue? Even my 6 year could respond to the op in this scenario.
Pps saying that Tesco has a diverse employment policy. That's really great, but employees still need to be able to fulfill their roles and being asked a simple question, politely, and responding with a cold glare is not appropriate in customer care role.
People saying he was baffled? About what? Come on! Seriously, if you would be baffled about a customer initiating a query about a product, and you don't have enough mental capacity to process such a simple interaction, how do you get through life?
Op, do not listen to these PPs who will use any kind of pathetic, soggy, paper thin excuse to excuse appalling behaviour from a man to a woman. Yes complain.