Poor service from Hillz Refrigeration

The technician scoped the fault for my stove wrong, and is ignoring my followup request.

Hills Refrigeration scoped the repair work for my stove and oven at home which did not work 6 Jan 2021. Such submitted to insurance and approved, I gave Hillz Refrigeration the approval to do the work. They did the work 8 Jan and oven worked fine. Until some weeks later on 3 Feb the same problem on the oven presented again. I contacted Hillz refrigeration who send the same technician on 17 Feb to look at the oven again. The technician responded by saying the oven is fine, but the electrical distribution board supplying the oven is the problem. After many calls, e-mail and text messages I have not yet received a written statement of the problem on my oven. Hillz refrigeration received payment for the work done 8 Feb, but my oven is not working. I have asked for the written statement to submit to my insurance.

I am not pleased.