Unreliable Repair place

I contacted the above Repair to come see to my oven as it had stopped working. The guy came the next day and after quite a while finally fixed the oven. After he left we noticed that all of a sudden the plates weren't working and we phoned them. For a week they kept saying they are coming but did not. I was absolutely furious as I could now not use my stove. Eventually he came and was very curt with my husband & me as if it were my fault. I will never use them again.