Horrible service from Citiq Prepaid

Hi I would like to lodge a formal complaint about one of your call Centre agent who was very unprofessional and rude towards me. I sent an email yesterday to Bernadette Salie requesting a utility bill for the electricity that we are paying at our properties in Mfuleni. She responded today telephonically very rude to me that she doesn't appreciate my email. bear in mind when I spoke to her yesterday she said she cannot call me back when I asked her to call me back. After many emails yesterday she was able to call me today and told me she doesn't appreciate my emails. Is this how Citiq Prepaid communicate with their clients? Do they even go training on how telephone etiquette. I was very disappointed by her tone and insensitivity towards my cry as all I wanted was an electricity bill. I trust this will receive attention. I told her I will lodge a formal complaint if she is refusing to assist me, her response was go-ahead with a very abrupt tone. Amazing hey! I was Amused and ridiculed!