FNB just does not take me seriously. Customer service is nonexistent!

I have been really frustrated with the negligence and just poor service from FNB! it is actually a variety of different issues and I will list them accordingly.

1. I app**** for a credit card limit increase and that was approved. I was given an interest rate of 17.25% and i negotiated this and they sent me a letter to say i have been approved for 15.25%. I rep**** to the email saying that i accept the offer and then so i waited for the money to reflect on my account/. I had already received a debit order mandate detailing when and how much i will be debited for the new amount. I called in to find out how long the money will reflect. I was told it would take about 24 hour. The 24 hours became weeks and so i enquired. I was told i need to sign a contract, a contract i did not even receive from the bank. The lady i spoke to over the phone eventually sent me the contract. However, the contract did not reflect the 15.25% that i was offered. Instead, the contract reflected 17.25%, the original contract offer which i was not happy about. I liased with the bank and made them aware that they sent me a contract that was not reflectihng the percentage i was offered. I emailed them twice and asked them to correct this. The bank did not send me a contract quoting the 15.25%. and so I kept waiting and another week has passed and still nobody from FNB is assisting me. I complained to the bank via Twitter and i was told the matter had been escalated. It has been days now and i still have not received a call from FNB regarding this. I am totally fed up with this saga and this has *****ed my experience with the bank. I moved from Standard Bank to FNB cos they promised me a more decent home loan offer if i transferred my salary to them. My experience with FNB has been great up until now. I do not think it is fair on me to even follow up with the bank when I clearly am a paying customer. At this rate i am not even sure what to do. I still need the credit card limit increase but i do not need this level of stress from my service provider. I expected smoother and more seamless service from FNB as a reputable banking institution. Application Reference number: ***

2. I ordered new cards, a premier fusion card and a new credit card as I wanted to use the new and updated black-coloured cards as opposed to grey. When the cards were delivered, i only received one card and i thought they would be delivered together. Fine, i got one card and I will get the other one soon. However, the card that I got does not work. I cannot swipe, tap or transact with the card. I tried using the new credit card twice and it would not work. This is another issue i have. Why would FNB give me my cards separately, and why would they give me a card that does not work. All of these issues are frustrating me so much and also makes my life so difficult. The last thing i need to be worrying about are these banking issues.