Worst service with Capitec and there loan process

I need some help regarding my Capitec loan I have been paying my loan manually every month. However last month 27th June I paid my loan and they said it is done, my balance was zero. I have screen grabs to prove that this is what they told me I was under the impression that I was done with my loan. The next day I saw Capitec took my money again for the exact same loan that I finished paid for already. I called them the girl told me she can see I paid my loan and will dispute the amount that was taken, she carried on and did that I got the money back. Right, so Capitec then calls me again to tell me I am in arrears which is ****ed up because I paid my loan finish and on time. The girl who help me wasn’t very helpful she just told me I must pay and she can’t give me further information she needs to pass me over to another department I said okay I agreed pass me over. She then proceed by passing or she just placed me on hold because the hold music was playing and the line just cut while I’m waiting this is the worst experience I have ever experienced. I need to speak to someone higher with authority so that this can be sorted because I was done paying my loan!!!! Because of this whole ****ing my name is down the drain!! My credit score will be messed I won’t be able to get account or loan because my credit score is poor because of Capitec. I even got a email saying that your credit went down. This stays on my name for 5 entire years while they have good credit scores can buy them vehicles and house and all the thing they can buy if they have a good credit score how nice!!! This all started with the one idiot girl who gave me the loan she never processed my loan correctly this was in Capitec Vanguard Malll even the other guy in Capitec said that she had to make it as a debit but she didn’t. She even messed up my MTN account also because I use to bank with ABSA and she said she’ll take my debits and put it on my account because I changed my bank to Capitec so my salary can come in that account and the loan can be deducted but this was not what she did even though she told me she will do this. I am in a arrears and my credit score is bad due to Capitec staff negligence!! I need this sorted out ASAP