Nedbank a big disappointment

In November 2022 Nedbank closed my account, I went to the Parow branch where they assisted me my account was then reopened, and they half my installment amount without asking if it is okay with me, in December 2022 they did not collect their payment, not even a collection attempt, they then called me telling I am in arrears when I asked why they didn't collect the payment the agent could not explain why and advised she will escalate it and get back within 24-48 hours, we are in February now, I advised they can take double in January again no collection attempt, they have now closed my account once again, my credit has taken a dip since and they are not taking responsibility as was an error on their part.