Masterpass Snapscan refund

I wrote a review earlier relating my experience of being incorrectly debited after using Snapscan on my masterpass app. The transaction was reversed on 14/02/2020. The money has still not been refunded. Poor show Standard Bank. Of course it's month end now and when my debit orders bounce it will be my fault and I will have to pay R150 a pop. The amount in question is R3300.00. I have tried the standard bank call centre and was given the runaround by clueless call centre agents. Please, I need this money urgently.