Dissatisfied client

Had a faulty drill after it broke in 1 day use. Took it back to builders centurion and they said had to be sent to supplier. Supplier authorized the replacement of the drill. I got back to builders and they issued me a voucher. Only problem is the same model drill which I only had 1 day use is now more expensive. I thought the supplier authorized replacement (which I wanted) not a refund.