Purchase Duplicated from bank account

On Saturday 02 Sep 2017, I made a purchase totalling R31.90, which I paid via my Capitec debit card. Ref: KFC Eureka Cape Town. On checking my bank account today, I noted that the amount has gone off once again! Date: 06 Sep 2017, Ref: KFC Eureka Matroosfontein. Could someone URGENTLY please contact me, as I did not make this purchase yesterday, and also, the KFC at Avonwood is currently closed due to a fire at the restaurant. This is unacceptable! Cindy Arendse - **********