Dealing with coworkers

This is basically just a rant about work but to all the employed people, I'd like some advice I work weekends but i was told to come in on a weekday so i did and i had one of the worst days of my short employed life so far. First of all, this lady that has been training me for most of the time has been doing almost the opposite of what the supervisor had told me to do and when another lady from another shift went to tell her something that i did that i guess wasnt okay she told me later "I dont want you to say, oh [she] taught me this" LIKE HELLO?? I DIDNT EVEN MAKE A MISTAKE BIG ENOUGH TO WARRANT HER FEELING HYPOTHETICALLY EMBARASSED BY WHAT I DID.

Second, there was an old lady working that day that i just did nottt like. I greeted her with a nod like i do everybody when i saw her looking at me but she never returned a smile or even talked to me until way later when she was looking for something and assumed I was the one who placed it somewhere else. I told her what happened and then she practically ignores me and grabs the thing she needed right where i was BUSY and ignored all my actions to help her. She even shoved a chair into my side and didnt bother to say sorry or spare me a glance. She was super loud too there was no reason for her to be yelling at me like that when the whole area was quiet. The whole time i was there, she just kept looking at me. Not even talking to the other ladies that were next to her but just quietly staring at me it was creepy and felt judgemental.

Anyways I have to go back there soon and its likely im going to see her. But what am i supposed to do about having to work with unpleasant people? Im going to follow what the supervisor says to do, but id hate to be watched like that again by that old lady. Do i just gotta suck it up guys :/