Car fitted with normal Tyre with no Spare tyre

My rating for Mercedes Pinetown would have been 4.5 for the service I received when purchased the vehicle 2 years ago and the first service I received a year ago. Due to my recent incident and acknowledging that Mercedes failed to see this flaw before giving me the car my rating is now 1. Problem encountered while driving at night the rear tyre got a puncture. Cannot fill air as this was a cut and a spare tyre would have worked. However the car did not come with a spare tyre, instead a tyre air pump was received with the car. Being normal tyres I realized that the car should have come with a spare tyre. If there is no spare then should have fitted with run flats. The tyre is damaged now going 2 weeks and we cannot seem to purchase a replacement Mercedes approved tyre. The car cannot be used because there is no spare and this tyre is not available at dealers, Pirelli South Africa and also Mercedes do not have them listed on their system. This is definitely a concern. I require answers on the way forward. What should I do and only Mercedes can give answers due to the factory fitted tyres, what tyres to use safely that will maintain the cars warranty and why was there no spare tyre. The dealership may have overlooked this flaw with the tyre when the car arrived. Probably they thought it was run flats so did I, seeing that it had a tyre pressure gauge.

I would appreciate for mercedes to rectify this problem. Are their any other cars out there that may encounter this problem with the 2021 Mercedes GLA200