HOW DARE YOU!!!

I have had a Discovery Credit Card for about 2 years, and three days ago I was paying for a purchase and the teller told me my card was declined. I called Discovery this morning to find out what was going on and they informed me that FNB has frozen my account because of an issue with my KYC documents (proof of residence etc)... I've had the card for TWO YEARS!? Why is there an issue all of a sudden, and why the f--k did you not notify me before hand? This is rude and disgusting! <br> <br> F--k you FNB I have never felt so disrespected by a bank! I don't even get an apology, just an email asking me to submit my proof of residence like they've done nothing wrong?? No explanation of why or when this will be sorted out. CANCELLING MY CARD!!! So FNB will have to explain to Discovery why they are losing business!<br>