Share investing ****

Please do not invest in FNBs Share investor account.. This product was marketed by FNB as an affordable alternative to investing Globally but its the worst marketing gimmick ever. I invested a small amount of money which I invested in Apple shares under FNB ETN. I was charged R7.83 to buy the shares. Today I tried to purchase more shares and the cost is suddenly R100. I then tried to sell the Apple shares and the cost to sell them exceeded the amount of money that I had in the account. When I contacted FNB I was told that since the cost of selling the shares exceeded the shares I would have to DONATE the shares to FNB before I coyld close this account. I was further advised that I had misunderstood the product offering. How does FNB get away this? This is thievery. Im seriously considering changing bankers.