TL;DR at bottom:

I work part time in a small office. I'm a single mom of a disabled child.

One coworker, Jane, a woman a decade or so older than me, bought stuff for my child from Etsy fairly often. I always thanked her, and told her it is not necessary but she said she enjoys shopping. Sometimes she buys a matching pair of something, like a couple months ago she got two identical handmade twirly dresses that my daughter loved. Jane said she bought two so my daughter wouldn't worry about ruining one.

A few weeks ago I found out that Jane and several other of the office workers do what they call "Thrifty Buys" on Etsy and Amazon and other sites. They buy something, leave a terrible review, and blackmail the owner into not only refunding but often into sending a replacement, so they get items for free, and sometimes two items for free. They tell each other the shops so they all buy stuff from some and leave several poor reviews one after another, especially if they got lots of free stuff from them the first time.

I was horrified and realized that those cute dresses Jane got my daughter were probably gotten that way. I contacted the shop owner from the tag on the dress, and yes, Jane had gotten them both for free. Even though I don't make much money, I insisted on paying for both, because they were nice, and I felt so bad about it.

The shop owner sent me a link to a website that showed Jane's reviews on Etsy. Many were positive, but about half were negative. The shop owner said that once Jane got a refund and a free dress she had given her a perfect stars review. It appeared that shops that didn't give her refunds or made her return the item for refunds had to keep the poor reviews, but she changed the reviews to shops that gave her free stuff.

I felt bad, because I had been given some of those things she got through blackmailing the shops, and I contacted both Etsy and Amazon with Jane's name and told them what she and the others in the office did.

Nothing happened for a few weeks after I reported but then at work Jane was mad because her Etsy name was canceled because of her blackmailing for reviews. I told her that I had done it because it was unfair to steal from small businesses and that I had talked to the dress shop owner and she had told me what a financial hardship it had been to give her those two free dresses, and how it hurt her sales while the poor review was on her page. Jane scoffed and said they shouldn't be in business if they can't handle normal losses, and that it was a jerk move to report her. She also said it was no big deal and she would just have to start a new profile, and I hadn't done anything but to show my true colors.

Since then Jane and the others at work have been treating me badly. They 'lose' my work so I have to redo it, and when I left my computer open while I went to the bathroom they changed my passwords and it took me the rest of my work day to get it fixed and I got in trouble. Jane and the others keep bringing in the free stuff they have gotten and ask me if I'm going to report them for those things too.

I'm wondering if I should have just kept my mouth shut since all it did was make them mad at me, and it didn't help anyone and because I think I might have to quit if this keeps up.

TL;DR Coworkers blackmail crafters with poor reviews online for free stuff, and I reported one of them to the website. Nothing happened to them, but I was told I was a jerk and a tattletale.

AITA?