Double debit

Made an online purchase on Friday 12.08.2022 on the Romans Pizza portal, got debited and got debited again on the 15.08.2022 for the same transaction. Called Romans pizza was told by the Manager (Suzan) from the Montana branch to send an email to head office, Sent an email to Mandy Coetsee who then says its Capitec Bank's error and not on their side. Called 4 times to Capitec bank's call centre got a different response each time but the common response is that the money has been banked by Romans Pizza therefore they are unable to reverse the funds on their side I have been sent from pillar to post and no one is taking accountability and I need my money reversed or a refund