Unsatisfactory customer service

Received airfryer on 24 January 2024. Airfryer not switching on 13 May 2024. I need to return the asset with courier ***n cost, non refundable) in original packaged and unused? Store credit of R699. 99 will be provide although we paid R1474. 99 How is this good customer service. Order 785934. No person contact need to liaise on WhatsApp only