Defy know for defective appliances & appalling services

Defy, a so called "trusted brand" sells defective fridges provides appalling Customer Service. I purchased a Defy upright fridge/freezer in 2015. In 2019 there was an insulation problem & the fridge was replaced. 3 years later, the exact same problem occurred with the replacement fridge. I paid a call out fee as Defy stated there is no warranty on a replacement fridge. To my dismay the call our fee was paid for a technician to spend 2 minutes taking pictures of the defect. It took 2 weeks of calls & emails for Defy to agree to fetch the fridge for repairs. Due to Defy's lack of accountability & poor service, I delayed the fridge being fetched for repairs as I was concerned about time frame for it's retun. My concern was justified as 4 days later, I received no response to my query regarding the return of the fridge. 6 days later, I was informed the fridge cannot be released as the repairs wasn't successful. Apart from being inconvenienced, I have incurred losses due to perishables turning bad. I have tried desperately to get hold of the Manager of Head office in Jacobs since 9 January, as I believe the defective fridge should be replaced. The Manager does not respond to calls nor emails. I have also emailed Defy directly, with no response received. Defy is known to be a "trusted appliance brand" yet is clear that the Defy upright fridge is known for insulation problems. Furthermore, Customer service is the worst I have ever experienced. I highly recommend Defy looks at the tons of negative reviews on its website as the brand has most definitely lost it's credibility.