Very bad service

I opened a account at Capitec bank Carnival mall, and I did a loan also, I ask the agent if the instalment will go off from my Capitec account and she said it will, then the first installment didn't,but from my Absa account. I phoned Capitec HQ and I ask why it didn't went off from my Capitec that I ask for. They apologised and took my new details and and the same day the payment went off from my Capitec account, then the following month the same problem, it went foff from my old Absa account, and then they put me on ITC for not paying, again I phoned Capitec and again they apologised and again I give all my details and it went off. But now because there people not doing what they have to I'm on ITC as a bad payer. My score went down with almost 10 points. I send a email to there customer service department but got no reply. I'm so disgusted, thought Capitec will try to help there customers. Biggest mistake ever to leave Absa to go to Capitec.