Stove still not right after 112 days

Good day,I would like some advice please. 2 years ago I had an issue with my Defy DGS160 stove. After 3 visits it was found at that time that the selector board was "burnt" and replaced. From that day onwards the oven did not work correctly. The food would constantly be burnt. My mother in law had juat moved in, and did the cooking so at first we just thought she did not know how to use the oven. Eventually we figured that the oven selector did not actually work right. If it was on "Bake" it would grill. But due to many personal issues, (Covid and other illness,) ,I never returned to Defy. I accepted that there would be no further warranty on the work Fast forward to this year On the 15th of July 2022, I took my stove to the Authorised Defy service agents in PE. We were moving and I wanted the stove fixed before we use it in the new house I requested that the stove be serviced, but with particular attention to the fact that the oven selector is not working correctly. I suspected that it had been wired incorrectly. I had to pay R450 up front I was told that it would be done within a week. I also asked that they order new knobs, as the paint had come off the old ones. I said that even if the knobs came later. I requested that they quote me before any major work is done. I was not in a particular hurry, but was expecting a reasonable turn around time. I heard nothing from them. I tried to call a couple of times, but could never get through. I ended up asking my husband to go around the offices to find out what was going on. This was around the 14th of September. He went in his lunch time, waited over half an hour, but nobody could help him. He went again after work, and was then told they were waiting for parts. On Friday the 16th of September I phoned again, and was told the stove is ready. I could not collect it on that day, and went on the 21st of September. When I got there I waited for quite some time after saying that I was there to collect the stove. The person from reception finally came back, and told me the stove is not ready. The manager was called. She then told me that after they replaced the selector board, they found that there is something else wrong, as it kept on tripping the power. (I never had that issue before) They also found that there was something wrong with the fan motor or something., and they needed to order more parts. I was pretty annoyed at that point. It also came to light then, that only when my husband went around, they discovered that no parts had been ordered,(hence our long wait) I was then quoted on the extra parts that had to be ordered, and was told that due to the inconvenience caused, they will deliver it once ready Again, I heard nothing. On the 6th of October I called again. Spoke to manager I was told they received all the parts, and it had been installed, the stove had been cleaned, and they just want the head technician to do a final check Again, silence. On the 20th of October I called again. Spoke to manager again. I was told that when it was checked, it was still tripping, and they had discovered that the element needs replacing, but they have already ordered the parts.

I finally received the call today, 27 October that we can collect the stove(no deluvery-manager forgot she promised me) But since I've had such a bad experience, I asked my husband to please just go and collect it. When we got home, I looked at the stove, and, to my horror found the following. In the oven, I noted that the fan cover was absent. I then also noted that the cover plate that is normally between the oven door and the Control Panel is also missing. I have been without my stove for 112 days. We are a family of 6. Cooking has been a real challenge Please tell me what I must do to get this rectified