no customer care service at eager motors fresh stop retail filling station

On Saturday 11 April 2020 i bought a cliq electronic cigarette. The cashier gave me the wrong refill cartridges and when I went back today 14 April 2020 The manager on duty refused to refund or replace the wrong cartridge as i have already opened it to refill the electronic cigarette. The managers argument was that no one would buy it now as it was already opened. I find this extremely poor customer service, as the cashiers sold me the wrong product to begin with. The cashier whom incorrectly supp**** the wrong attachment (refills x2) was Ben or Moses as names appear on cashiers slip.

A younger white (supervisor?) assisted me today the 14th April and refused to refund or exchange to wrong refill as I already opened it assuming it was the correct product. His only explanation was that no one would now buy the product as it is already opened. I find this unacceptable customer service.

This incident occured at Caltex eager motors in Mokopane Limpopo.

Please resolve this matter as i can not afford to just discard R55.00

Kindly note to only correspond via email ***