Kia Northcliffe not fulfilling promises

I bought a second hand Ford Eco Sport from at Kia Northcliff. This was my second purchase from this dealership and I have always received great service them. Unfortunately this has been a frustrating experience. When I picked up the car on 16 August, we were told the spare key is still at another branch and we found that the whole fog light housing was removed and had to be replaced. They promised to get everything sorted. That evening I also found out that the light bulb in the front roof was missing and told my sales rep about it. On 6 September. I went to get my number plates and showed the light bulb missing, but I was told there is no light bulb in the roof there which was odd to me. At this stage the part for the fog light was still unavailable and no spare key. I took my car for a service at Ford and they confirmed that there should be a lightbulb. I then again spoke to the sales rep and asked about the bulb, fog light fitting and spare key and I was promised that she will get back to me. I have been following up multiple times and I still don't have any answers. What should I do?