Capitec bank cant resolve issues

I am currently banking at capitec bank and I am starting to regret it. I had a personal loan with capitec bank which I got in october 2016. I also had a credit facility with them which expired 27 February 2017. Ever since then I could not get a personal loan nor could I re-activate my credit facility because at capitec's head office they say that they see that I have an outstanding credit facility of R922 and a personal loan at FNB bank on which they claim that I took in 2014 and in which its 2 months behind. So how did I them get a personal loan at capitec bank in October 2016 if I had a personal loan at FNB bank in 2014??? I took the matter to transunion as the bank requested me to do. Transunion sent me a credit report which proves that I dont have an outstanding loan account at FNB bank nor a credit facility at capitec bank. I further also provided capitec bank with a paid up letter from FNB bank to prove that I dont have any dept at FNB bank and capitec bank still refuses to help me with a personal loan. Further more they cant tell me what the next step is to set things right and clear my mame with them. So what am I to do from this moment on,who else is there to complain to, to set thing right??? Please help