Dollar Tree

I am complaining because the cashier was very rude and couldn't manage five people in a line, the cashier was very rude to the older lady ahead of me and i was standing in the line as well on the tape on the ground as well, exactly where i was supposed to .I had to raise my voice to her becuase she was being rude and couldn't have manners to her custmors, due to cov19, she also refuused my service beause she couldn't even hear my suggestion once i heard her speak rudly to the older lady, ahead me inline.she calls security and has the manger assist me with the my purchases ...I think that with her treating me bad over the line and being unable to manage custmores with kindness, she need to either be let go(fired) or talked to on how she treats custmors.I feel she also put me at risk by refusing me for actions, i had told her my son is in the car with my mother due cov19 that is very, very unclean of her...Yesterday i went in there looking for a few house hold thing i needed and the line was from the cashier checkout stand to the freezers all the way in the back and everyone was s skin to skin and she didnt have problem then so today i was trying to tell she wasn't worried about yesterday/now five people is an issue.(inline)i will never shop in that store, ever again.
p.s.no with manners should be taken as an employee

marlow off of piner dallor store
santa rosa ca.