Incorrect information and then billed for it

After receiving the following sms: "FNB :-) Hi *****, this is a friendly reminder that your FNB Gold Credit Card payment of R1,409.00 is due on 26 September 2017 ", I made sure that I had sufficient funds. Instead of this amount, a much bigger amount was processed for which I was not prepared. I had the money but it was another account waiting for the sms that I expected to receive reminding me that my FNB payment for that larger amount was due. Due to the incorrect information, my credit card payment was revoked and I was charged nearly R800 interest. I have deposited the outstanding total into the FNB account and have emailed my proof of payment. I would like to be refunded for the interest that I was charged due to an error in your system.