Horrible service by Nedbank for double debit with no communication with client

Nedbank double debts my account without letting me any reason, when I spend almost 30 minutes on the phone holding for them, I found out that my account was restructured, which that was the first time I heard it, I only app**** for two months(May & June 2020) payment holiday, but only June was given to me, now this month(July) they(Nedbank) double debts my account on two different days(20th & 25th), so I called to find out, but no answers, only to be told that my account was restructured, now I need to wait for almost 5 days for refund, now my rent is waiting for them(Nedbank)