Why do people like this come into retail stores just to start trouble?

This one woman comes into my TJ Maxx every few weeks and she always starts trouble. Today, she came to my register to return a couple pairs of shoes, on a couple different receipts, $40 each. 2 of the receipts were about 4 months old and I told her I'd have to give her back store credit, as we have a 30 day policy. She was arguing to get cash back. And on one of the receipts, she had used a 10 percent credit coupon so I told her she was only getting $36 back for one of the $40 shoes. Then she started accusing me of stealing $4 from her. So I called my manager over and he explained the policy to her and she demanded the number to corporate. So she called them and twisted my manager's words around. Not exactly sure what she was saying because I was ringing up my next customer, but I heard my manager telling her, "That's not what I said ma'am." Anyway, she came back to me, spitefully agreeing to get store credit back. So I processed the first receipt, then she swiped the card, and slammed it on the counter in front of me! Then I scanned the next receipt, gave her back the card, she swiped it, then slammed it on the counter again!
There was another incident last year when she came in to return an iPhone screen protector, angrily accusing us of selling her a cracked one! So she exchanged it for another one. To calm her down, I opened the box of the new one to show her it was in good condition. So she bought that one and left… Or so I thought

Added (1). She came back like 10 minutes later, back to my register (LUCKY ME), slams the screen protector on the counter, angrily screaming, "THIS ONE'S CRACKED TOO!"

Added (2). QUIT SWITCHING THE CATEGORY, JERK!

Because they just want to piss you off, I would do it if I lived near your store because I'm tired of reading your BS posts.

This sounds like a customer that is engaging in a systematic ongoing fraudulent return pattern. After work you might want to talk to the manager and tell the manager that this customer purchases items on a regular basis and uses the items for several months and then returns them to get money.

You need to stop posting this nonsense. If you hate your job so much, QUIT.

We have heard DOZENS OF TIMES ABOUT BS. We're TIRED OF IT.

This belongs in MENTAL HEALTH or JOKES. Has nothing to do with business. You put it in the wrong category. Not me.

You are clearly unable to just serve your customers so your boss should FIRE YOU.

These are not questions, they are MENTALLY ILL RANTS.

Because the stores don't give refunds for things purchased 4 months earlier.

There are some some centered people who think rules don't apply to them

Repeated troll spamming. Troll has posted this rot for years.

Because squeaky wheels (noisy people) often get what they want just to shut them up and make them go away.