Lack of response

<p>Good day. I have queried my FNB credit card billing in the month of October 2016 , I got a response from FNB Admin on the 14/10/2016 which totally made no sense Case ID ********** , i responded and till today not another response. My credit card balance was R8229.91 which included my budget installment , i made purchases of R908.50 in september 2016 , making my balance R9138.41 , i paid a total of R6608 before the statement close on 06/10/2016 , making my balance R2530.41 , i am charged R144.16 interest which to me sounds extremely high just for one month and such a low amount. according to email from FNB admin , they are not noting the payments of R3700 + 138 and charging me interest on amount R5 459.91</p> <p> </p> <p>i have paid my balance up however feel that FNB always has issues and i am tired of always complaining , if this cant be resolved , i would rather switch my credit card acc to another bank</p>