Bad Service Virtual Card Duplication Fnb

Good day I am not impressed with Fnb since the day i reopened my account it has been issue after issue.I made a online purchase last week on the 16th i created a Virtual Card as its safer.I remember transferring enough money from my savings to my Premier account.On saturday only to find my account being in a negative balance.I called cs dept and the lady seemed totally clueless and confused.She tells me she sees a purchase of x amount went through online purchase then she sees the exact amount pending but she does not know where it comes from.Sher then transferred me to the digital dept.I was on hold or waiting in the q forever and this was still in the morning no reply.The IVR states that there's an issue and Fnb is aware of it that when you buy on Virtual card it duplicates the purchase.I could not use my card at all this weekend.I called again this morning was transferred twice and the virtual team has no idea.I am still inconvenienced because my card still in a negative and they not assisting.Telling me they must go check.What kinda service is this when you have a issue on your side and you don't correct it and you don't care that you are inconveniencing a client.I want this fixed today please this is unacceptable.