Online shopping double debits are annoying

I'm getting tired of the double debits on every online shop with Woolworths. My most recent incident was a purchase online on 21 Feb; debit went off. Goods were delivered on 25 Feb. Today, 26 Feb I was debited again. Sent a message via the website at 07:30. Still no contact except the automatic response saying "Our Online Customer Services Team will respond to your query as soon as possible"... then I had to call my bank.