Defy hasn't honored there warranty

I have been trying to get my Defy fridge fixed for 6 weeks. This started one month before the warranty expired and is still continuing. I have sent emails and telephone calls. The technicians have been here 7 times and nothing changes. The customer service is null and void. They will not honor the warranty. Every time I go our to try and resolve this I run the risk of bringing home Covid 19 to my 80 year old mother in law