RCS Makro card double deductions.

I made 2 purchases on the 28th of April making use of wicodes on the Makro RCS app. The one amount is R293.90 and the other R256.94. Both these wicodes were used on the MrD app. Then on 30 April both these amounts were deducted AGAIN from my Makro app. I made no purchase on 30 April. I sent screenshot via email to the Makro RCS department but received no help to reverse these charges that were never made. I want these 2 duplicate amounts reversed as my account is now in arrears. Please can someone sort this out ASAP?