I work at a small retail store and we have quite a few regular customers who know I'm studying computer science because I'm always coding at work on my laptop.

One lady who comes in quite often and is very sweet asked me if I would take a look at her phone. She said she bought it and paid the owner of a phone repair store to set it up for her, but was felt like he did something weird to it. I told her I wasn't an expert but would look at it.

Oh my god. This guy set up her phone connected to his own personal icloud account. All of his music was on there. All of his contacts were on there. All of his pictures were on there. Even nude pictures of multiple people that this lady said she definitely does not know. I tell her this is very very wrong and no one in their right mind should've set her phone up this way.

I automatically think to factory reset. I'm unfamiliar with iPhone, as the last time I used one was an iPhone4 many years ago. I was unaware that apple applies an authentication lock when the phone is reset.
The authentication is set up underneath yet ANOTHER email address that belongs to this guy, as this lady promised me she has no knowledge of any email address similar to the one listed, nor does she have access to it.

I tell her to call the guy and ask for her money back and to unlock her phone so that she can reset it herself.

He claims that he cannot accept refunds if a factory reset has been performed.

Uhm, I am calling SOOOOO much bullshit. There should be absolutely no reason why the owner of the phone cannot factory reset it. The owner should be able to do ANYTHING she wants with it, without being locked out of it because some creep at a repair store did NOT DO HIS JOB CORRECTLY AND HE KNOWS IT. Why else would he claim he can't refund if it's been reset, because he KNOWS she got locked out.

So long story short I talked on the phone with him and cussed him out telling him he was wrong for taking advantage of someone who doesn't know much about technology and that he was invading privacy and violating her security and that i would report him if he didn't fully refund her and unlock her phone.

He gave her all of her money back, unlocked the phone (which she is deciding to sell because she got so scared by this), and I'm still filing a complaint against this man and his store. Who knows how many more clueless people he did this too. Fucking scumbag.