Urgent complaint - very bad service

Good Day I am very disappointed in tbe service received at Woolworths un Menlynn Mall. I wanted to use my gift voucher to pay for my purchase, i presented the voucher to the cashier and accourding to me I had to pay in R98. On my way out of the store I received a message from my bank and discovered she did not use the voucher she took the whole amount from my accout.

I went to customer service and they assisted me with a reversal, I explicitly asked the lady how long will the reversal take and she informed me within 24 hours.

I received a message from my bank advising me that my account is in a negative and i need to rectify the issue because I will be paying penalties, the bank advised me that the reversal will take at least 7 days.

Very shocked and dissapointed will never shop at Woolworths if this issue can not be sorted, as I am now paying penalties.