Capitec Bank Consultant ruined my life!!!

I went I to the bank for a loan as I have done so many times before. This time the consultant made a mistake on my account that I am paying for now. I told him I am looking for a loan to consolidate my accounts so that I only pay Capitec. I stated to him that I can only pay R3000 back per month. He sid ok and showed me what I qualified for. I looked on the screen and agreed. While I was busy on my phone he said I will help you out and by that I didn't think of anything. He then gave my papers and I signed. When I got home I looked and saw he added an additional R30 000 to my account and that my installment has doubled to over R6000 per month. I know understand why he said he would help me out by adding more money and stupidly think I would be fine with the higher installment. The bank has now been freezing my account with my funds in it as I am behind with my loan now. I have been paying R3000 into my loan account since I got the loan and I can only go into the bank in Feb to try fix this. Until then my salary and everything else is blocked. How the heck am I suppose to live now? I been phoning and phoning and going into the bank. Spoken to collections and nothing!!! I can't give the money back, I sorted out all my dept the minute I walked out the bank because that's what I wanted it for. Your consultant ruined my life Capitec! I had many loans with you and I will open a different bank account with another bank. You lost me as a client.