who cares

one of my colleague lost here iphone last night, she leaved left it on the teller machine after she drew some money. Yesterday we three(and another colleaaague) came out to have dinner and then we went to market to do some shopping and then went back to dorm. She drew money on the way to dorm, the teller machine is in our own industrial park. Today the colleague who lost her phone tells others that her phone is lost because she just paid attention to chatting with me about her money, and didn't noticed her phone, another colleague drew money and didn't notice it either, but one woman just blamed at me why don't you remind her of her phone, what's wrong with that mad lady, it's none of my business, ok? firstly, I didn't know she put it on teller machine, secondly, it's your own business to protect your own property. we have no duty to protect your things. I mean, if I knew she left her phone I would tell her, the point is I didn't know and didn't notice, I am very angry, that mad woman tells others we don't remind the girl of her phone once again, I retort back, what she said is just disgusting, just make me sick, I don't want to have this group of women, I cannot stand it anymore, I will resign this work, on one hand I don't like it on other hand I hate this place, you will never know the blacken man's feeling unless you meet with it, now I do, I truely felt it, I want to speak some bad language as I am very very very irritated, how should I calm down?