Bad service from Defy

On the 06 June 2019 a technician by the name Melu came to my house to check the damaged on my fridge. He only checked and asked me to give him the serial number ( if that's what you call the fridge number) then he told me the Defy consultants will give me a call to let me know if the damaged part is on the warranty or not and the way forward. No-one contacted me, on the 18/06/2019 I called again and spoke to Sibusiso who told me there's no record that showed a Technician was at my house. Sibusiso said he will send an email to the people who will get the feedback from Melu so I must expect a call.

I ran out of options now because I do not know what must I do to get the people from Defy to assist me with the light holder of my fridge that I bought in January 2019 to be fixed.