Builders Northriding - Help this woman get out of customer facing positions

Usually, I have no issues going here but today everything about this checkout experience was just miserable. Everything started while as soon I got to the front of the queue and was waiting for the indication from the automated system on where to go. I see someone wave at me from down the line so I just start going without anything being said. My fate dished me Teller 9, the time at around 13h00. Looking at this horrible excuse of a woman I immediately got the impression she was visibly annoyed that I'm even showing my face in her space. I greet her and ask hows things going - she looks at me with a blank stare. At this point, my son was already packing out 2 things, and I turn to her again and ask can I put it down? She actually goes 'NO'. I apologize and ok cool and put the two items back in my trolley and ask her can you tell me where I can go to? She replies 'HERE'. At this point, I realize she's toying with me and enjoying it. I pack out everything again and lean over to ask her 'Are you having a bad day?' - which seemed to have just added fuel to the fire. Got everything scanned and paid and the slip gets printed. She pulls it off the printer and then leans with her arm against the till, holding it out. I put out my hand in an asking fashion and i could have sworn i saw her look at the slip then my hand then up and me. I step forward and lean in and take the slip and say "thank you very much. Maybe get some sleep "