Useless FNB bank

Hi

Can anyone please tell me when did FNB become so useless to it's customers. The way I used to speak highly of this bank, I'm very disappointed in FNB service. So I have an account with Rain and normally I would make payment on their website through a link however for some reason after 2 years Rain decided to now to do a payment through an automated payment on my FNB account which I did not authorize, and when I enquired that told me this is how they work now and I do not agree to this. Their system doesn't allow me to remove my card details. I've been calling FNB as my bank that I trust with my money to block Rain from accessing my account but they have been sending me from pillar to post FNB what is going on?? I have sent an email to the complaints department however there's no feedback no one cares.