Question for Vodaworld Midrand, Contact Number, Address, Vodaworld Trading Hours

I have a cheque card purchase off my bank account done at a Vodacom, transaction description 9571, R450.00, 22 Feb.2017. Vodacom Centurion say it was not done at their branch and they don't know what it's for. I did not buy anything at a Vodacom shop and the bank card is in my possession. How can I determine what this is?