bad attitude

On the 21st of April 2015 I was trying to assist miss gloria phasa with regards to her edgars account query as she did not understand what was happening with it. I even went as far as reprinting her back receipts in order for her to understand better. She still said she does not understand. I used paper to calculate the query. She still did not understand. I asked her to please take out her phone so we can use a calculator n I will get 1 for my self. She stood up and left without me finishing with her. Then she send a complaint about me saying I did not help her after all I did in explaining to her her query. I believe that for sum1 who works at a big bank as fnb would understand her math better. If someone need help they do not do what she did. I dont know if she wanted me to run after her or what. I want to know if that is how fnb bank is teaching its staff members to behave at other companies. I am very sad that I am about to loose my job because of her. My name is Elizabeth Phefadu and I work at edgars in menlyn mall. *** is my no.s I want these woman to apologise to me or I am taking these matter further