Foschini's incompetence

I have been a customer of Foschini for the past 12 years, my credit with Foschini has always been impeccable, until recently. In April 2018 I was informed that my account was in arrears, as I know that a debit order was in place I took it as a mistake sms send by the system, shortly thereafter I received a phone call informing me of a missed payment, I phoned in and according to the accounts dept my debit order of 12 years was cancelled, without my knowledge or consent, changes were apparently made to my account. I was dealing wwith death in the family wat this stage, and did not have the time or will to spend hours on the phone, I visited my nearest store and made a payment of R3000.00, phoned customer care to sort out the current issue. 8 months down the line and my debit order has gone of twice, September 2018 for the amount of R820.00 and then in October 2018 for R70.00? To say the least do Focshini's account dept have any idea what the are doing?? I have send mails, made calls, been put on hold for hours on end trying to sort this out, and in all honesty Im sick and tired of receiving messages and emails demanding payment after Ive gone to every extent to reinstate my debit order.

My credit score has always been spotless, now?? how is this going to reflect on me? Not only do I demand an explanation, I need Foschini to correct this and as soon as possible, before I turn this escapade into a lawsuit.