Why do so many Nigerians feel the need to constantly ask others for things they know they shouldn't ask for?

I visited my aunt and while staying with her, her housekeeper asked me to give her my phone! I felt backed into a corner so I told her I was using it and then told my aunt about it. My aunt then called her and shouted at her and now I feel really guilty for telling her about it.

I keep thinking, it was just a simple phone that I don't really use and I have other better phones so why couldn't I give it to her, but at the same time, I think it was really inappropriate in the first place.

I don't know. I'm just left nursing a guilty conscience and feeling like a selfish, greedy brat.

Did I do the wrong thing?

Update: Just to clarify, she didn't ask for my phone because she NEEDED a phone - She already has one.

The phone in question that she asked me for just happens to be a nicer model than the one she has so she just wanted it.

Also, when my aunt asked her about it, she told my aunt that she asked me for it because she wanted to help me sell it. O_o.

Obviously I don't really believe that but even if that was really why she asked me for it, isn't it bizarre to just go about assuming that people want to sell their possessions (without them informing you first)? And even if they wanted to sell their possessions, why would you assume that they are incapable of selling them themselves? I mean, is she some kind of super duper sales agent that we don't know about? The explanation she gave my aunt was all kinds of faulty but I do feel bad about telling my aunt because she got yelled at and I don't want to put her job in jeopardy.

The thing is, my aunt pays her well and it's not like my aunt just pays her something random. When she came to work for my aunt, she sat at the table and my aunt let her negotiate her salary. My aunt asked her what she wanted to be paid and that's what she's paying her plus she gets a lot of freebies/bonuses/extras on top.

I wouldn't have told my aunt if I'd thought about it more but I was just really shocked/surprised by it and I was taken aback and my aunt and I are really close so I just mentioned it to her.