Update of my banking details

Capitec is becoming the worst bank by day looking at the bad reviews just for one day (06 December). I've changed banks from Standard Bank to FNB in September. I then requested FNB to switch my Capitec debit order from Standard Bank to FNB and I guess they failed because of capitec's bad service. On the 15th October, i got shocked to realised the debit order was not switched and capitec debited from the old account i have with standard bank and it bounced as a result because there were no funds. I then, the same day, went to the Keywest branch to check what went wrong. The consultant requested the proof of banking details (FNB) which I provided and she assured me everything has been updated. On the 15 November, to my shock again Capitec debited from the old standard bank account and the debit order bounced. Mind you, all these charges of the bounced debit order are credited against my name. I immediately visited the branch again to find out what could be the issue. They then advised me to send the FNB bank statement which i did. They later realised they could not update from their side so they needed to contact the collections department to update. I was put on a call with the collection department, while they were still busy updating, there was an issue, I couldnt receive an sms from them to accept the instruction to update the banking details, and this resulted in them ending the call and promised to call during the week of which they failed. Today I called the collection department again to check if they managed to update my banking details, only to hear that they still have the old standard bank account details. We went through the same process again of updating, it was then time for them to send the sms for me to approve the updating of banking details. The sms could not reach me again and the process was aborted and was told the matter is being escalated. I then requested the number for the complaints department because I realised I'm going to deal with the same story this december month end of the debit order bouncing because they failing to update my banking details. The lady who was helping me requested that i send them my FNB bank statement and standard bank bank statement highlighting the charges i incurred tthrough an email they will send via sms. Till now, I'm still waiting for that sms. I'm really exhausted of this capitec bank.