Capfin is not a reliable financial service provider

I've been nothing, but a loyal client to capfin. Since the day I took a loan from Capfin, I have not missed any of my monthly payments. One of the consultants from Capfin called me, told me that my account is in arrears. And I asked her how come, when I have not even missed a single monthly payment to Capfin. She told me that a deposit of R8000 was made into their FNB account by me, at the same time it was reversed. So that altimately made my capfin account to end up on arrears. I told the consultant that called me, that I did not make such a transaction. She then told me that, she'll escalate the matter to her superiors and they'll investigate. After a couple of weeks they called me back, told me that they found that the fault was on their side in the finance department and they'll rectify it. To my surprise this year on this month, the day before yesterday. I get a call from a consultant at Capfin, raising that issue again which they said last year it was rectified. That they mistake was them. Bearing in mind that my last payment to Capfin is February 2021. Why now Capfin is calling me, telling me about arrears and how am I going to pay them, that I must arrange . When that issue was found to have been a mistake made by their finance department and was said that it was rectified. But now when I am done paying the capfin loan, they call me asking for more money which I don't owe them. Which it came to be because of their mistake on my account. I'm greatly disappointed in Capfin as a financial institution, that its doing this to me. When I have been nothing but a loyal client to them.