FNB customer service not up to standerd

I have had the worst experience with FNB bank since Sunday. I went to one of there branches to open up an account. My account was opened. So now the struggling starts. I wanted to link my online banking app with my bank account. I was told to do this online and sent home. At home, trying to link my account and my app it does not happen, try it on my computer still nothing. At the branch I was told that something was wrong with the card. Remember I just opened the account. The representative told me it would be fixed on Monday. Tuesday I try to link it, still nothing happening, back to the bank we go. The reason why I opened the account was to link my paypal account to it. My sister has been struggling with this for six weeks now. If you are a paypal user you will know that the money only stays in your account for 30 days, so she is actually at the point where she is already using money, she was also at the same branch on Sunday and was told that it would be fixed on Monday, it is Thursday and there are still no results. Now she has come into contact with paypal over this already and she was told that everything is fine on their side, the problem lies with FNB. At the bank I was told that there is a block on my card, which I could not understand, since I only opened the account on Sunday and I had not used it yet. I sat in the bank for three hours and expressly told them that paypal says that the fault is on their side. I was with a representative for about 15 minutes and sent of again without my app and account being linked or my paypal. I asked them for the router number that we must use to link the account with paypal and no-one seems to know what I am talking about. I even spoke to the manager. Three hours later I left the bank not a very happy customer as nothing was resolved. So Wednesday I went to another branch to link my app and my account. They gave me the excuse that I should link it with data and not use the wifi because it is more secure. I was sent home again without anything being linked. So I got data disconnected the Wi-Fi and tried again the same message I got since Sunday. Pairing error, or the browser is not recognized. So it is now Thursday my apps are still not linked, I still don't have a link with my paypal account, my sister is going in for her seventh week struggling with this and yet again loosing more mony.