bad attitude and shouting at custormers

I was at Edgar's store centurion querying about my 3 weeks pending cellphone claim, I was assisted by shoki one of their advisor there I wasn't happy with the respond how she spoke to me my question was why is my phone claiming documents not loaded on insurance because when I call the insurance they say they have not received anything from my name but when call you guys you're saying everything is insurance that is holding back and I think I have spoken to different advisors. I asked her to explain why. that was when she started to shout and throw my card shouting while her colleagues laugh I felt like stupid