No serive, quick to deduct money

23 Feb 2021 sent a notification to change my debit order date. On 03 March 2021 received reference number GSENQ***. Same day I sent a mail requesting an update and on 09 March 2021 I received confirmation that the Payment date was changed (Ref Number CCCPC***3). On 29 April 2021 the premium was again deducted and there being no funds, I incurred a R150 penalty from FNB. I called their "Customer Service" Centre on 29 April @ 09h25 and was told it will be corrected but they will inquire about the penalty refund. Today, 29 May, the premium was again deducted from my bank account and I will again incur a penalty of R150, which is now R300. When sending mails to their service centre, they are automatically deleted. NO SERVICE.