Rude call center operators

Today 19 Feb 2018 my husband bought 1Gig data for R139 for me on FNB connect to recharge my data as it was depleted. Currently fnb has a promo of buy 1Gig and get 1Gig free that is valid for 10days. In total I got 2Gig data. I usually use 1Gig data a month as I only use it to whatsup, google and now and then gumtree (seldomly facebook). I don't download music/movies/video's from the internet. At 11h38 my husband recharged my account with above mentioned data. Once I received it, I sent him a whatsup to thank him, I sent my friend 4-5 photos and a message via whatsup. I exited whatsup and went to google to find out information about a medical aid. I downloaded a plain pdf file with different options about the medical aid and closed the google window. I always close my open windows to avoid waste of data. In less than 5 min all my data was depleted. How can 2Gig data be depleted in less than 5min? I did not do anything I don't usually do. The pdf file of the medical aid, I download yearly amd it doesn't even use 1MB. How can 2Gig disappear like that. This is not my first problem with fnb and my data. They ***** their customers data, when you complain/enquire they ignore or insult you. When you follow up, there is no trace of your many complaints via phone call and emails. If you give reference numbers that was given to you, it does not excist-they delete all traces and keep taking your data for themselfs. Today after my 2Gig data disappeard,I phoned the fnb connect call centre again. The person I spoke to logged the complaint and told me they will get back to me before the end of the day-she ****. I phone an hour later again and spoke to Carmen Frank-she was rude, shouted at me, talked over me without listening to my complaint, later made the same promise that I will be phoned back before 5pm,then placed me on hold, and changed her story again while treating me like a street dog. She then handed the phone to her team leader, Mahlatse Gikgole. I explained my frustration and complained about the rude call center operators and how they give me false information. He then also started shouting at me (the customer),talked over me not respecting me and threw the phone down in my ear. This is a call center shift leader?! Never in my life (and I'm in my late 30's) has anyone in a call center spoken to me like that-never! I deal with a lot of call centers and occasionally with regards to a complaint I have-never has anyone treated me like fnb connect call center operaters! They are rude,very unprofessional and disgusting to deal with. Still is my 2Gig data gone,again fnb stole it and they just don't care about their customers. How is this allowed fnb?! I want my data back-it is theft by taking my data because fnb needs money! It is not my problem if you are going the route of CAPITEC-fnb has driven themselfs into the ground now they ***** their customers money! Is that professional?