Ackermans - Phoned purchased cash which did not work from the date of purchase, and cannot be reapaired

I purchased a phone cash, during August 2022 for R2 700. Since buying the phone, it kept telling me that the network is not registered. I have visited Ackermans on numerous occasions during the past year, and phoned their customer care number, numerous times to have the problem resolved, with no luck. I have even mailed them numerous times with no answer. Instead you get rude, unwilling to help assistance on the other side of the line. I demand my money back for the phone which is not working. I have left the phone at the store where I bought it. The phone cannot be repaired as they have sent the phone to Vodacom who advised it cannot be repaired. If I cannot get e refund, I will have to report Ackermans to the National Consumer Commission, and involve the media in this matter that is long overdue. In the meantime, I do not have a phone and no refund.